The error check facility is still there in XP
though it is now a bit harder to find
To find it click on My Computer,right click on Local Disk (C: )
Select Properties>click on Tools tab in next box, the Error checking (Scandisk) is the top button press the (
Check Now)button in the tiny box,tick
both the items to fix the errors on your Hard Drive then click the
Start button to run Ok
Depending on how your system is organised. It should not take too long

BTW Did you also notice that beneath this button is the
Defrag button? Hit this when you have finished Scandisk save you going elsewhere

Should work smoothly now
Note if when Scandisking it produces little notes like "Trunciating files" or something similar you can recover that space by downloading /running a tiny program (size 1400k)called "Easycleaner" (also cleans the Registry)
from
www.toniarts.com/ecleane.htm I've been using it for the last year.when I first ran it, it cleared a lot of clutter out of my computer gained nearly a Gig of space!

and speeded it up

I run it every few months or after a bad crash

usually puts things back to rights
