SharedView

If you are looking for a nifty NetMeeting-but-better desktop sharing application, you may want to check out Microsoft's SharedView (currently in Beta 2):

SharedView page on Connect:
http://connect.microsoft.com/site/sitehome.aspx?SiteID=94

3.5MB Download Link:
http://r.office.microsoft.com/r/rlidSV?clid=1033&p1=1&p2=DF_SWdownload