If Google Desktop Doesn't Search Outlook
You have successfully downloaded and installed Google Desktop, but it doesn't seem to search Outlook properly. Perhaps you are missing the toolbar add-in as well. There are a few factors that might cause this to happen and fixes that resolve some of these issues.
First, ensure that Google Desktop is set up to index your email. Right-click the icon in your system tray and select Options. On the Desktop Search tab, make sure that Email is selected in the Search Types section. Click the Save Preferences window to apply any changes.
Keep Outlook open when Desktop is initially indexing your files. To begin indexing, right-click the system tray icon, point to Indexing and select Re-Index. You can also uninstall and reinstall Google Desktop, leaving Outlook running while you do so, if you choose.
Check to see if the add-in is installed. In Outlook 2003, go to the Tools menu and select Options. On the Other tab, click Advanced Options and then click the Add-in Manager button. In Outlook 2007, go to the Tools menu and select Trust Center. Click the Add-ins button. Check to see whether the Google Desktop Search Outlook Addin check box is listed and selected.
If the add-in is not listed, you can add it manually.