Steam download code insertion

[izzy eckerslike]

I won a Steam copy of Dirt2 on another forum, the prize is the download code but I can't fathom out how where to type it in.
If I select the game & go to checkout there's nowhere to type it in, just credit card details etc.

 

[L0rdMike]

Under Games at the top, active a product on Steam.

 

[LizardKing]

Steam > Game > activate a product on steam

 

[izzy eckerslike]

Found it, I just discovered the download is 10 gig don't think I'll bother as I'll get capped & throttled to death