ignore that link i posted.
I just purchased ToV via Steam this weekend. I have CoH and CoH OF retail copies.
I wanted to use my retail/relic account to play all the games:
Here is what I did to make it work:
1. Purchased ToV via Steam
2. Started the Download
3. Opened Regedit, navigated to HKEY_CURRENT_USERSoftwareValveSteamUsers%user number%cdkeys
Look for the key 20540 and write down that CD-key (Looks like this:xxxx-xxxx-xxxx-xxxx-xxxx)
4. Open Retail CoH, choose add product or click on the new campaigns, enter Cd-Key
5. Go back to steam and stop download and remove the game from your list.
This way you can play via Relic online anddon't have to download the game again. It would be nice if Steam just gave me the Cd-key after I purchased it.
Not sure this helps everyone, but worked great for me!
Viper
Source:
http://forums.steampowered.com/forums/showthread.php?t=730598&page=3
it might work for you. i didn't try it cause i launch regular CoH then CoH OF