error - message \$MFT

[Howard]

Hi,
I'm getting following error message:
Windows - Corrupt File
The file or directory \$MFT is corrupt and unreadable.
Please run the Chkdisk utility

I've tried following:
1) Running Chkdisk utility. - fixes the problem for maybe
one hour and then it starts again.
2) System Restore - I get the message that I haven't made
any changes, even that I've now been running WindowsXp
since may 2003.

I hope someone can help me with this problem.