I think the OP is asking if a full W7 DVD would work with his key (from what I gather, his PC only included "Recovery Disks", and not a full OS on a standalone DVD).
You could buy another copy of W7 to get the installation DVD, but you already own a license. The licence keys that come with pre-built PC's are almost always "OEM", and should likely work with the equivalent OEM DVD disc.
EG: If you have a W7 Home Premium 32-Bit license key on your PC, and you find a W7 Home Premium 32-Bit OEM DVD, your legit W7 key *should* work. This is likely a "Grey Area", but you can try DL'ing an "Untouched" W7 OEM DVD - this should not be an issue as long as you find a clean one w/o root-kits and viri. FWIW - A W7 "Retail Disc" likely won't work with your "OEM" key...
or get it off a torrent.
Buy an OEM copy of the version you got and the code will work.
You should know talk of piracy is not allowed on OCF, downloading an MS OS from a torrent is not legal, and if not careful you could end up with a copy with modified code.
Well, If you get the Disc that has Win 7 installer on it... Then yes the key which I'm assuming is stickered to the bottom of the computer if it's a lappy or otherwise the key you would need if you used the recovery cd... it would work.
Edit: maybe a friend of yours has the DVD and would let you borrow the disc to install it with your key?
I don't want to call you out on a specific, but I have to.
Torrenting was created for sharing of large files from multiple sources to increase download speed and offset the bandwidth usage by a single server. It was not created with the intent to pirate software (how it is used mostly now). Many places use torrents to share legitimate downloads and legal files. So him suggesting to get it from a torrent could be innocent.
The keys are not coded to the cds specifically... so enjoy
I had no idea getting Windows off a torrent with a legit key was illegal...nor did I get the impression that it was for illegal use considering he stated he had a legit key. My bad for even throwing that out there. Now I know (and knowing is half the battle, GI JOE!!!!!!).