Using Vista x64 hm prem. My FF & TB profiles & bookmarks were created under the default Administrator acct in Vista (custom profiles - not "Default"). Trying to SHARE same custom user profile / bookmarks between admin & standard Vista user acct. When try to use FF Profile Mgr to create new profile under a standard user acct in Vista (not Administrator), & browse to profile location to select existing custom profile (per several Mozilla KBs), it's not visible - but "Default profile is." Read several Mozilla KBs on using existing FF or TB profiles when creating new acct under another (Windows) user acct. Instructions are simple, but KBs may not address issues sharing profiles in Vista x64. KBs say should be no problem sharing same profile between users, but maybe not in Vista x64? I have "show hidden files / folders" checked under the Administrator & std user acct. When logged in under std user acct & browse to the profile location, only default profile is visible. Tried everything can think of, Re: from w/in the admin acct, giving permissions / sharing the Mozilla appdata folder w/ a standard user acct. Custom profile created in admin acct just won't show in Explorer - no matter what. All the security features of Vista x64 are fine, but some are so complex I'm sure many users turn off some when possible. Tried this for TB - same problem. Maybe I missed an article w/ instructions on sharing profiles in Vista x64, or just need to change secret setting(s)? No help from Mozilla forum. Thanks.