you can try booting your pc using the 3 gb switch in the boot.ini. it will change the ram allocation more for the game and less for the operating system. i kinda forgot how to do it. something like run msconfi in the run box of the start icon in the lower left corner. then select modified boot.ini. then you gotta copy the original boot.ini and modifiy it with the 3 gb switch and save it and...blah. just google it. anyway you get it set up, then reboot your computer and it will prompt you how you want to boot up, either standard way or the 3gb switch way. so you select the latter and off you go.
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