diff -uNr src/org/eclipse/update/internal/ui/wizards/ModeSelectionPage.java src.orig/org/eclipse/update/internal/ui/wizards/ModeSelectionPage.java

--- src/org/eclipse/update/internal/ui/wizards/ModeSelectionPage.java	2005-06-10 18:27:12.000000000 -0400

+++ src.orig/org/eclipse/update/internal/ui/wizards/ModeSelectionPage.java	2005-06-16 12:08:30.000000000 -0400

@@ -10,6 +10,7 @@

  *******************************************************************************/

 package org.eclipse.update.internal.ui.wizards;

+import org.eclipse.core.runtime.Platform;

 import org.eclipse.jface.dialogs.Dialog;

 import org.eclipse.jface.dialogs.IDialogSettings;

 import org.eclipse.swt.SWT;

@@ -70,10 +71,17 @@

 		GridLayout layout = new GridLayout();

 		composite.setLayout(layout);

 		updatesButton = new Button(composite, SWT.RADIO);

-		updatesButton.setText(UpdateUIMessages.ModeSelectionPage_updates); 

+		updatesButton.setText(UpdateUIMessages.ModeSelectionPage_updates);

 		updateMode = !getSettings().getBoolean(P_NEW_FEATURES_MODE);

+		// don't allow updates if the installation location is readonly

+		if (Platform.getInstallLocation().isReadOnly()) {

+			updatesButton.setEnabled(false); 

+			updateMode = false;

+		}

 		updatesButton.setSelection(updateMode);

+	

+		

 		final Label updatesText = new Label(composite, SWT.WRAP);

 		updatesText.setText(UpdateUIMessages.ModeSelectionPage_updatesText);

 		GridData gd = new GridData(GridData.FILL_HORIZONTAL);

diff -uNr src/org/eclipse/update/internal/ui/wizards/TargetPage.java src.orig/org/eclipse/update/internal/ui/wizards/TargetPage.java

--- src/org/eclipse/update/internal/ui/wizards/TargetPage.java	2005-06-10 18:29:01.000000000 -0400

+++ src.orig/org/eclipse/update/internal/ui/wizards/TargetPage.java	2005-06-16 12:09:05.000000000 -0400

@@ -10,25 +10,48 @@

  *******************************************************************************/

 package org.eclipse.update.internal.ui.wizards;

-import java.io.*;

-import java.util.*;

-

+import java.io.File;

+import java.util.HashSet;

+import java.util.Iterator;

+

+import org.eclipse.core.runtime.CoreException;

+import org.eclipse.core.runtime.IStatus;

+import org.eclipse.core.runtime.Platform;

 import org.eclipse.jface.dialogs.Dialog;

-import org.eclipse.jface.resource.*;

-import org.eclipse.jface.viewers.*;

+import org.eclipse.jface.resource.ImageDescriptor;

+import org.eclipse.jface.viewers.ISelectionChangedListener;

+import org.eclipse.jface.viewers.IStructuredContentProvider;

+import org.eclipse.jface.viewers.IStructuredSelection;

+import org.eclipse.jface.viewers.ITableLabelProvider;

+import org.eclipse.jface.viewers.LabelProvider;

+import org.eclipse.jface.viewers.SelectionChangedEvent;

+import org.eclipse.jface.viewers.StructuredSelection;

+import org.eclipse.jface.viewers.TableViewer;

 import org.eclipse.osgi.util.NLS;

-import org.eclipse.swt.*;

-import org.eclipse.swt.events.*;

-import org.eclipse.swt.graphics.*;

-import org.eclipse.swt.layout.*;

-import org.eclipse.swt.widgets.*;

-import org.eclipse.ui.*;

-import org.eclipse.update.configuration.*;

-import org.eclipse.update.core.*;

-import org.eclipse.update.internal.operations.*;

-import org.eclipse.update.internal.ui.*;

-import org.eclipse.update.internal.ui.parts.*;

-import org.eclipse.update.operations.*;

+import org.eclipse.swt.SWT;

+import org.eclipse.swt.events.SelectionAdapter;

+import org.eclipse.swt.events.SelectionEvent;

+import org.eclipse.swt.graphics.Image;

+import org.eclipse.swt.layout.GridData;

+import org.eclipse.swt.layout.GridLayout;

+import org.eclipse.swt.widgets.Button;

+import org.eclipse.swt.widgets.Composite;

+import org.eclipse.swt.widgets.Control;

+import org.eclipse.swt.widgets.Label;

+import org.eclipse.ui.PlatformUI;

+import org.eclipse.update.configuration.IConfiguredSite;

+import org.eclipse.update.configuration.IInstallConfiguration;

+import org.eclipse.update.configuration.IInstallConfigurationChangedListener;

+import org.eclipse.update.configuration.LocalSystemInfo;

+import org.eclipse.update.core.IFeature;

+import org.eclipse.update.internal.operations.UpdateUtils;

+import org.eclipse.update.internal.ui.UpdateLabelProvider;

+import org.eclipse.update.internal.ui.UpdateUI;

+import org.eclipse.update.internal.ui.UpdateUIImages;

+import org.eclipse.update.internal.ui.UpdateUIMessages;

+import org.eclipse.update.internal.ui.parts.DefaultContentProvider;

+import org.eclipse.update.internal.ui.parts.SWTUtil;

+import org.eclipse.update.operations.IInstallFeatureOperation;

 public class TargetPage extends BannerPage implements IDynamicPage {

 	private TableViewer jobViewer;

@@ -150,7 +173,7 @@

         label.setLayoutData(gd);

 		installLocation = new Label(client, SWT.NULL);

-        installLocation.setText("foo"); //$NON-NLS-1$

+        installLocation.setText("");

         gd = new GridData(GridData.FILL_HORIZONTAL);

         installLocation.setLayoutData(gd);

@@ -359,8 +382,28 @@

 				jobs[i].setTargetSite(defaultSite);

 				continue;

 			}

+			

+			IConfiguredSite csite = getFirstTargetSite(jobs[i]);

+			if (csite == null && Platform.getInstallLocation().isReadOnly()) {

+				// there are no updateable sites and the installation location is read only

+				// make an update site in the user's home direcotry

+				String sitePath = System.getProperty("user.home") + File.separator + ".eclipse" + File.separator +

+								  Platform.getProduct().getId() + File.separator + "updates"; //$NON-NLS-1$ //$NON-NLS-2$

+

+				try {

+					csite = config.createConfiguredSite(new File(sitePath));

+					config.addConfiguredSite(csite);

+					IStatus status = csite.verifyUpdatableStatus();

+					if (!status.isOK())

+						throw new CoreException(status);

+

+				} catch (CoreException e) {

+					// there was a problem, the user must choose an installation site

+					csite = null;

+				}

+			}

-			jobs[i].setTargetSite(getFirstTargetSite(jobs[i]));

+			jobs[i].setTargetSite(csite);

 		}

 	}

@@ -370,7 +413,7 @@

 		IConfiguredSite[] sites = config.getConfiguredSites();

 		for (int i = 0; i < sites.length; i++) {

 			IConfiguredSite csite = sites[i];

-			if (getSiteVisibility(csite, job)) 

+			if (getSiteVisibility(csite, job) && csite.verifyUpdatableStatus().isOK() == true) 

 				return csite;

 		}

 		return null;