can 'see' PC but can't access folders

I added a new PC to my home network,(xp pro, sp1) and networking was fine. Then I went online (but forgot to enable firewall) to update critical patches and then afterwards, hopefully to update Norton AV defs, but I didn't make it. During critical patch update, I got infected with W.32Gaobot and W.32.Spybot. Finally cleaned them out, but now folders on infected PC can't be accessed over my network.
Infected PC can see and access other PC's but other PC's (running XP & Me), although they can 'see' the infected PC, they can't access any of its shared folders ( "PC is not accessible. You might not have permission to use this network resource... ").
Everyone can ping everyone else, 'sharing' is enabled and IP addresses all correct. System Restore isn't an option because I had to turn it off to clean out the worms. Any ideas would be appreciated.
Thanks - Gil Theissen

 

This sounds like an authentication issue. Check your permissions settings on the folders as well as share settings. It might be worth:

Taking ownership of the folder (via the "Advanced" options) with the sub-folders/child objects options set so that all the sub-object inherit the same ownership.

Then reset the folder permissions as you want them.

Then reset the share permissions.

 

Thinking about it, it may be better to log on as Administrator and taking ownership/resetting permissions as the Administrator. Guess it depends how you have your PC set up, but I think that might be a better way of doing it.