i bought a new 160g hd for my compaq and decidedto put the older 80 into an cpu that had a burnt hd for the kids to use. everything is installed on both but i am havin problems with the 80g ha in the other machine. it gives me a screen sayin i need to activate windows. so i called microsoft and they told me that the windows software was only licensed to the original machine that it was in and that i need to buy a retail copy of XP and install it in order for it to work. i dont want to pay 199 for xp for a old computer for the kids. is there anything else i can do?