No
Sims have to go potty.
yes you can you but have to have sims 2
no you cant have babies but i think you can have two story houses but on the sims 2 for the computer you can have both
you cant you can only do that in the sims 3 sorry
Yeah they can
The same way any two sims can marry in the Sims 3
No, The Sims 2 and The Sims 3 are two separate games.
Sims 3 design and Hi-Tech Stuff is compatible with sims 3 (it is an expansion pack). You get two more hairstyles for each gender and various clothes and furniture. I would not encourage you to buy it , instead i would encourage you to go on the Sims 3 website and onto 'exchange' on here you can download houses, sims, hairstyles, clothing, furniture etc. which is downloaded to your Sims 3 game.
Yes, you can build your house in The Sims 3. However, building a house in The Sims 3 requires a certain amount of skill, especially for houses with multiple floors.
Yes, some houses do have an upstairs. For some of the houses though, you have to pay to upgrade to 2 levels.
yes, i know so
Sorry, you can't yet, maybe they'll put out and add-on or something for it or you could buy the Sims 3: Dog Houses! disc.