I have a G4 powerbook, 12 inch, 867 mghtz, and on the box to UT 2003, the system requerements, which are pretty steep, say excludes my computer. Now I have a Demo of UT 2003 and I cant exactly run it happily. Is there any way to get the demo to run as fast as possible, the original UT for mac was really fun, and I want to buy UT 2003 if it runs well.