If you have a CD and a CD-Key I think you're safe. I hope I am at least. I did actually use and activate the key once, but that was before XP was even released and I haven't used it since. That activation process just seems so wrong. It used to be even worse for me. For those of you who have been here for a while you saw me post about my Office XP CD. I got that for free as well about 2 weeks or so before the actual release date. At that point it was still subscription based. Not only did you have to active your copy, but you only had a yearly subscription. We obviously complained as did the whole world and they backed down from it. Nonetheless, OfficeXP and WindowsXP were originally subscription based and I'm hoping they don't go back to that idea.
<pre><font color=red>A64 3200+ Winchester
DFI Lan Party NF4 Ultra-D
1GB Corsair 4400C25PT
WD740GD, WD2000JB, WD1200JB