Not unless you backed them up. You may have to try
recovering by using system Restore, if OS files, or a file
recovery tool like Disk Investigator. It's free and has a
file recovery tool. You may have some luck as long as you
haven't run a defrag, but don't count on it. If they were
OS files then you can go>start\run and type in
sfc /scannow and click ok. You will have to put your XP CD
in the drive at this point. Be sure to leave the space
after SFC . This will replace missing or corrupt OS files
with the originals found on your CD. TTFN.
If you used the Quarantine facility, you may be able to retrieve the files
from Quarantine, via Tools, Spyware Scan, Manage Spyware Quarantine.
If you do manage to retrieve the files via this method, I would strongly
recommend copying them to another location other than the one they
originally were in, as a safety measure. There have been reports of losses
of files after retrieving them from quarantine.