I have a question about the ram thing.
My computer has 510 MB Ram, but I heard that Seasons will take 512 MB to run. I don't want to buy an upgrade since it's a 2-MB-difference, but I heard somewhere that you can free up 2 MB ram space by updating/changing your video or graphics card or whatever.
I have all the EPs except UNI, and I can play Pets without any major problems - that EP required 512 MB as well.