question with buying from Steam

any1 here use Steam at all? When I bought Crysis it came with 2 free Half Life 2 games from Steam and I think I wanna start buying most of my games from steam now but I have one question. Can I access my account from an other computer and download the games onto the other computer without having to pay for it again? for example

me and my brother do alot of gaming so could I just go on my account on his computer and just download a game i bought previously on my computer so both me and him could play the game?

 

Yes. As long as steam is installed on the other computer you can access your account and download games that you boought. Unless they are already on the comp?

 

ok so I couldnt have the same game on both me and my brothers comp at the same time?

 

Yes, but you couldn't both play at the same time.

 

i do this with my sister and i find that we can botth login and play halflife 2 on my account at the same time wierd stuff! try it and see...