help regarding autostreamer created sp2 windows cd

i would like to get some help regarding the key number of the windows sp2 bootable cd that i created using the autostreamer; the cd key was valid for the previous xp with sp1 but didnot worked for the cd thus created.
if anyone has a solution to this problem plz do write to me at my email id:
incredible_saket@yahoo.co.in
thanking u in advance
saket