I bought this game knowing full well that it requires 512RAM, while my computer came with 448mb of RAM.
...Is there anything I can do about this? Anything to make it let me try running it, even if the computer is a little slow and congested?
The retail disc installer of the game does have a check in there to make sure you at least meet the minimum requirement for RAM. It's always a good idea to put in as much RAM as your motherboard will allow. Start a different thread asking for help if you are unsure how to figure out how much RAM your computer will hold and what kind you'd need.
512MB is a pretty low requirement for RAM. I think Vista requires 1GB at the least.
Anyways, if the only requirement you do not meet is the RAM requirement, you should still be able to play the game, though the game will run slowly. As I said, the retail disc installer has a check for the RAM requirement, but it is possible to register your game with Impulse and use that to download and install the game.
In case you don't already know, Impulse is our free digital distribution application. You use it to download and update games. You can get Impulse from the Impulse website (http://www.impulsedriven.com/about.aspx).