Howdy, Tor! Nice to see another adult :rolleyes :lol
I can pinpoint your problem instantly - it's the Celeron processor. They can NOT handle the game easily. I know because I actually called MS and asked, way back when I had problems, too. It works, but not well. I now have a Pentium IV, and the game works with no problems.
Now, I'm not saying you have to replace your processor, but there might be driver updates for it, just like for the graphics cards. I would check your manufacturer's website for them and/or MS Windows update (they sometimes have driver updates). I think Blue Fang and MS are gong under the assumption that most people who buy ES have newer computers, many of which have the Pentium processors.
Now that you're depressed :whistle go on over to Introductions and meet everyone else - THEY'LL cheer you up! :happy
oh - almost forgot - did you check your graphics card against the "non-compatible" list that MS has? (Although I've seen others that use that card). Actually, I may have that card, too (I forget).