Yes, if you purchased the disc you should be able to put it into your computer and install again.
yes
No EA only allows you to register a code once online, but if not online you can install it more than once, like if you uninstall it you can install it again on the same computer.
You can't. If you want to install any expansion packs, you need to have the Sims base game installed otherwise the expansions won't work.
You can download The Sims 3 Seasons to more than one desktop PC, if you are an IT Professional (Information Technology) that fixes desktop PCs and notebooks at a business.
yes just make sure you have a serial number for both installations
Yes, you can install one copy of Sims 2 on as many computers as you want. However, you need the Sims 2 disc to start up the game. You can take this Disc out after you have gotten into a Neighbourhood and start up the other Sims 2, however, the Disc will be required for loading screens sometimes (Neighbourhood -> House etc.)
the triple deluxe is a different game than the Sims 2 so you can install it but they will now operated together since the Sims 1, and 2 are not compatible you cant play them at the same time or use Sims 2 expansion packs on the Sims one and you cant use Sims 1 expansion packs with the Sims 2
You can't really 'control' more than 8 sims at once but you could maybe take your household to a community lot where there will be more sims that you can interact with; or throw a party and invite over sims that you want in your movie.
You can't get anymore than "Partners".
Sims 2 is a completely different game than sims 3, so you can't get cars from sims 2 onto sims 3. You can try to maybe go on the sims 3 website and install a car that looks like one from sims 2 maybe....
Can you have more than 6 people in your family on sims 3 pets on ps3
Personally I love them both. But most people say they favor My sims kingdom more than My sims.