Someday you might be better of with a decently hacked version: The problem is, that your lock key is only valid for
a) n-days (normally 60) , within which a machine-specific code must be installed - newly installed (through web) whenever you rebuild your windows (or hard-disk...).
and
b) x-periods ( normally 4 quarters after production) during which above a) will work.
I found it to be a rather annoying copy-protection scheme - and cannot use some of my software with same system anymore, as the seller was sold (WoW - sold to tradestation, who won`t give me the code, but tried to sell me a very expensive T2ki)
Unfortunately I haven`t found that decent "hacked version".
Hittfeld