http://support.microsoft.com/kb/810881
http://support.micro...421&Product=winxp
It sounds like you have, but I'm not 100% sure. (Note it says you have to turn off "Simple File Sharing".)
That should get you into the folders. If you can't read the files, then some NTFS file-level permissions may be the issue. http://support.microsoft.com/kb/161275/
HTH a little. I haven't had to fight that battle myself.
Cheers,
Scott.