is that computer from the late 80's? cuz damn, anyways just save your money man, seriously once you save for what you need you will be better off,should have saved the money instead of buying PP1.5 but at any rate you should save you money man, to run PP1.5 you will need a faster computer inorder to run it correctly and actually enjoy it.
Pentium 4 Cpu H/T 3.7GHz
2x 1GB DDR2 533 RAM PC2 4200 Memory Upgrade Kit
Internal WD SATA Caviar SE 250GB 7200RPM Hard Drive w/ external WD Extreme Lighted Series II Drive 320 GB Hard Drive
HP 16x DVD(+/-)R/RW DL LightScribe drive
Adobe Preimire pro 1.5.1,Encore dvd 1.5,Audition 1.5,After Effects pro 6.5.1,Photoshop CS2!!
CANON GL2,CANON XL2,Sony HDV-FX1