Cant access one user profile

A friend of mine fried the mother board in her computer so she installed her hard drive in her Daughters PC. They both have XP professional. Her daughters drive is set as the master. On her hard drive she had 2 user profiles, hers was password protected while her sons wasn't. now when she tries to access her stuff she gets F:\documents and settings\herstuff is not accessible how ever she can still access her sons stuff which is on the same drive as her stuff.
Any help will be appreciated thanks.

 

she probably need to take ownership of the folder.

here is a link to basics

http://support.microsoft.com/default.aspx?scid=kb;en-us;308421

 

Thanks I have sent her the URL, I'll let you know how she goes