Originally Posted by naith_kk
See this link
to see why you're encountering that problem. You need to upgrade your Windows XP to Service Pack 2.
Use another computer with XP SP2 and above to do your rooting.
Strange, I was sure that PC has SP2...
But have used my work PC, worked fine and now sucessfully rooted. Thanks for the advice though, I'll check my home PC this afternoon for SP2!