Have you tried right clicking on the game in your Steam list and hovering your mouse pointer over the Manage option. If there is a key available there will be an option saying "CD keys". Click on that and Steam will show you all the ones it has for the game.
4 weeks ago
Thanks for letting me know. I bought Mass Effect 3 back when it launched on PC, check out the texture mods because they are awesome, but hoped a CDkey would be given for those who had to wait to give our Lord Gaben his 30%.