hi people,
im having a problem with windows 2000 on my dell computer, i used to have xp on it but ran into problems as it is not a legit version as i cant aford it

i put windows 2000 (non legit too) on the box and whenever any sort of network activity occured (like dialup or a lan connection) the whole system would grind to a halt and id wait at least 5 minutes for it to do anything, then the modem would hang up on a timeout i think

i got task manager up after a while and founds that a program 'services.exe' a windows component had somehow got 99% of my CPU time and was making the system run extremely slow

the computer is a dell optiplex gx110 (p3-667, 256 meg ram, voodoo 3 PCI, integrated network and an external modem and all the other usual things from a generic brand onboard), i dont get this prob with XP or win 98 and im just wondering what could be causing this to happen?