|From what I can make of it svchost.exe should not be in that location - unable to get to an XP computer right now but I'll check it out tomorrow and report back.|
In the meantime the most likely cause is a virus so for starters run MalwareBytes freebie - get it here:
Just run the quick scan and let it delete anything it finds. You might still need to run further programs if that doesn't help.
I would also go to the Run box, type sfc /scannow (one space as shown) then hit the Enter key. This will check your system files.
Always pop back and let us know the outcome - thanks