Now I have a question before I install Spore on my brother's computer once more, he finally got it up and running again after it crashed the last time. However he is something I am wondering about, Spore is still installed on his harddrive and there is no way of accessing it. If I install the game on his "new" computer with Vista, have I ran out of installs? Because I currently have it installed on his old harddrive, this computer I am on, and now his "new" harddrive. Is the limit only three installs per computer or per disc? I heard it was per computer. Meaning I am guaranteed three installs on each harddrives.

Now here is something that I am confused. We have two accounts on his computer. If we install Spore to the default location, would we both be able to play it on each of our accounts? This worked for The Sims and is like we each have our own version of the game. Does this work for Spore also?

You can 'deauthorize' the game, which would give back the installs.

How do you do it and how do you do it when you cannot get to it on the harddrive?