Quote Originally Posted by Whacker
Foz, I could be wrong but I *think* the HDD size issue was fixed in SP2, not SP1. /shrug I'm positive it's also been fixed for Win2k in an service pack (think it was 3) but I honestly don't know which one.
It is SP1 that fixed the hard drive size issue. In this case, the best thing to do is to obtain a copy of XP with SP1, or create a new windows cd with the necessary service packs as mentioned.

As to x64, it can access more memory (above 3.2 GB), and handle larger hard drive partitions (upwards of 4 terrabytes if I'm not mistaken). Performance wise you may not notice much of a difference with 32 bit apps, but I think there are differences for apps that are optimized for 64 bit.