ok, been doing this unattened thing for lil while now, have multiple cds for desktop, which is a std. retail xp pro. but now i got a new laptop, i got the os cd from HP, is a xp cd as far as i can tell, but on install-just after t-34 it asks my name and org., then network settings (typical, no workgroup) then the time zone, then it completes as normal, NO product key, and no activation. so my question is how do i write the winnt.sif without a key>? just deleteing that line did not work, and entering MY key gives a "invalid key" error so now whAT? thanks.