I recently upgraded from VirtualPC 6.0 to 6.1 (posted at Microsoft web site). Now when I run Internet Explorer, it seems to be able to resolve addresses but it has trouble connecting to most of the sites I want. The support site at Microsoft is of no use--the only thing that seems to work according to posters in the newsgroup is to reinstall 6.0. I can't do that because I'm on the road and my software CDs are at home (of course). My advice to those of you who are still on 6.0 -- DON'T UPGRADE until MS figures out what they broke.