Is that the reason you needed to restore?

What you might try is either system file checker to replace original system files or do a 2nd repair option. Neither will cause you to loose your programs or data.

you will need a M$ installation disc to perform either option...

start > run and type the following

SFC /scannow and press enter

please note the space before the /.
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to do the second repair option

How to Perform a Windows XP Repair Install
and scroll down to " XP repair install" and follow the directions!