somethign werid going on on my net and winxp

[UrrBodyH8sMe]

yes i log on the net and i can just be sitting there not doing a thing and its transfering like if i was d/l something but its not d/l anything and when i goto web pages it slows me way down is this a virus or a trojan cause i log on task manger and seen somethings working that should'nt be so i end the prosses and it stops transfering is there end way to stop this stuff for good in task manger so i wont have to end prosses ever time i log on also i got trojan remover it cant find any trojans and got nortins anti virus and it found nothing so if i could just stop this program from working all togather it may fix my problem