How do I add a non-steam game to steam?

I downloaded a Skyrim torrent and in steam there is an option to add a game to steam. I want to do this so I can chat with my friends and use the steam browser but my friend said I will get banned with no warning and lose everything is this true?

That's basically the question Let's say I buy a game digitally through Gamestop. i then add it to the Steam library. Will it back up the install process and everything?

I bought Skyrim for the Xbox 360 awhile ago and I was wondering if I could add it to my Steam account. Is it possible to add it to Steam?

I have the Sims 3 on the Steam client, but I recently got the Sims 3: Late Night expansion, physical copy. The code for it doesn't work for registering it in Steam, and I was wondering how I add this expansion to my game.

Steam Deleted ALL My Game Data?!? I have Steam and run most of my games through that. Well, I decided to be cool and add a non-Steam game to my game libraray. Next thing I know, I log into my game, and ALL OF MY SAVED DATA IS GONE. And not just for that...

I was wondering if it was possible to buy a game through steam online and activate it on my steam account. If it is possible can you please explain how I would do so or add a link to your answer for youtube? I mainly want to buy a game online through...

if i were to add a non steam game to steam other people couldn't go onto my account and see them they can only see the game i brought thought steam, is there anyway to add the games permanently so just say if i were to go on to another computer it would...