There doesn't appear to be much practical difference (for diagnosis purposes) between HjT 1.99 and 2.02.
Regarding your seriously out of date Windows, why?
You're still using a non-patched version, and using IE6.
There actually isn't a lot of point in trying to delete malware from this PC if you aren't going to patch it. It will be like trying to keep water out of a roof full of holes. You'll get sick of moving the buckets.
I'd get SP1, then get SP3, which can be installed on a XP SP1 system, then get the subsequent Ms updates.