BajaPaul,
Windows Media Center pulls some of your Library information from Windows Media Player. We will need to edit your library from there.
<><><><><><><><><><><><>
Add or remove monitored folders from your library:
Open **Windows Media Player,**press the Library tab and choose the type of media (Music, Pictures, Video, Recorded TV), then press F3 on your keyboard to open the Add To Library window, press Advanced Options, make your folder selections for your library (by selecting Add, Remove Ignore or Enable), click OK.
Now we will Remove unwanted existing content from your Library:
Press the Library tab, choose the type of media (Music, Pictures, Video, Recorded TV). Now select Library from the left side panel, from the Additional Views, select Folder. You can now right-click the desired folder and select Delete, at the notification box choose Delete from library only, press OK. Alternatively you can right-click any media file and follow the above steps to delete.
Note: The Pictures and Video Libraries in Windows Media Center automatically monitor your Current User's Pictures and Video folders. Any media content added to these folders will be automatically scanned into your Media Center, this includs the Public folder under C:/Users, place only the content you wish to add in them.
<><><><><><><><><><><><>
Report your result so that we may further assist you. Thank you for using the Microsoft Vista Support Community.
Rami
Microsoft Answers Support Engineer
Visit our Microsoft Answers Feedback Forum and let us know what you think.