If you do not have any NXT client installed....
Try to download the last Windows release
http://nxtra.org/nxt-wallet/install package, wait blockchain download - may take a while -
copy pathprhase, write it down, paste and click NEXT.
You'll notified -green sentence - with NXT address and Public key for first transaction.
fill the form as Dev said
quote author=ReserveShare link=topic=734477.msg8676311#msg8676311 date=1409860622]
and that's it....