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.)
Chat with our AI personalities
yes
yes just make sure you have a serial number for both installations
Can you have more than 6 people in your family on sims 3 pets on ps3
yes, you can use the sims 3 code more than once.
The Sims 3 Wii does and will never have any expansion packs. It is really different and worse than the other Sims 3, so I recommend you sell it and buy the Sims 3 for the computer instead.