while working in maya when ive got most of the spitfire turned into sub-ds etc everything becomes very very slow and the computer eventualy comes to a halt....

my PC specs:

AMD Athlon(tm) XP 3200+ @ 2191MHz

Gigabute GA-7N400 PRO2

Two sticks of Crucial 512 DDR

Abit Radeon 9600 256mb graphics card

650 watt PSU

anyone recommend anything?