don't make me laugh...
I beat both of you...
Though I love my computer, it is seriously outdated - 2Gb of DDR 400
And, even though it actually takes a while to load the game with all the mods, it runs very nicely if I don't push on all the graphics
Also, what jwilliams said above: antilag is a very usefull thing. In addition make sure that you are not running something like an Antivirus scan in the background or any other memory intencive applications.