Hi,
It is possible that you're still working offline/disconnected with the
projects.
The checkin command is available only when working online/connected
Open the solution in VS.NET, open the File/SourceControl/ChangeSourceControl
dialog, and look at the checkboxes in the Connected column.
If they are not checked, select all the project lines and press Connect
button, then press Ok.
(make sure you have access to the database when doing this)
When you get back online with the projects VS.NET will prompt you to
checkout for real the files, and after that you'll be able to check them in.

Signature
Alin Constantin
[This posting is provided "AS IS" with no warranties, and confers no
rights.]
> I don't know what happened, but my VS.NET project seems to have lost track
> of its VSS database after working remotely. There is no longer a check-in
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>
> What's going on? How do I get my projects to resynch?