Windows 7 to Windows xp file/folder sharing

Hello,

I have a Windows xp computer which has two user accounts. User A (admin) and User B (limited access). I am trying to share all of User B's file on my network so that they are accessible in another computer which is running Windows 7. I can see the Shared folders that already exist in Windows xp on my Windows 7 computer. I can also see User A files and folders which are enabled for sharing, but this is not true for User B. When I try to access User Bs files I get the error which tells me to talk to the administrator.

I guess the problem exists in the xp system. When I select User A's folders to share, there is a progress box which changes the attributes of all the folders and their files. But when I do the same with User B, this progress box never appears. So I believe they are not allowed to be shared from the xp side. Although when right clicking them and checking properties, they do have the share option enabled.

I have tried everything but I have not been able to share User B's files on the network. The process is that I have to log into User A's account to change any settings (because its the only admin account). The process works fine with User A (admin) but not with User B (limited access).

Any help is greatly appreciated!