I discovered recently that searching on team project portals in SharePoint does not work out of the box. If you try it, you'll most likely get a page with the following message:
"Your search cannot be completed because this site is not assigned to an indexer. Contact your administrator for more information."
If it works in your environment, fantastic! If not, read on...
The resolution is simple really. The basic steps can be found in the answer in the following MSDN forum thread:
http://social.msdn.microsoft.com/Forums/en-US/tfsadmin/thread/ffeaedec-7497-4c8c-8c2b-ffa185a949ee/
I verified the initial configuration in two separate test environments (TFS 2008 SP1 with WSS 3.0 SP1) and found the Windows SharePoint Services Search service disabled. I've had reports of the same issue from environments where they upgraded from TFS 2005 with WSS 2.0.
Running through the SharePoint Products and Technologies Wizard with the default selections gets things configured so that Windows SharePoint Services Search shows up in SharePoint Central Administration | Operations | Topology and Services | Services on Server page. From there you can start the service and configure the user accounts (I used the TFS service account making sure to include the domain). When you go look at your content database under Applications Management | SharePoint Web Application Management | Content Databases, the dropdown next to the "Search Server" section should be enabled and contain the name of your server. Select that and apply the changes.
Be sure to restart the Windows SharePoint Services Search service from the Services MMC snap-in after this. I did not have to force an additional IIS reset to begin seeing search results.
Why the appropriate configuration isn't applied by the TFS install process is beyond me. I'd be interested if someone in the know could clue me in.
jb