Can the Sims 3 be played on two computers at the same time?

[mollycocolucky]

Alright so I know it's possible to have the Sims 3 on two computers but I'm not exactly sure how to do it so that you can play them at the same time. I've been playing sims for several years, and I have a friend who is just now getting into the game. I want her to be able to play at home without giving up my ability to play too.

I own 5 disc games (base, Late Night, Generations, Ambitions, Seasons) and 5 digital copies (University, Pets, Island Paradise, World Adventures, Supernatural). The last one I installed was Island Paradise, and I don't need a disc to play, but the last disc I installed was Seasons.

So what I'm really wondering is, does it matter what order I install the games for it to work?