KINDLY HELP UPGRADING P-4. CANT PLAY ANY VIDEOS SMOOTHLY. ALL DRIVERS LOADED. RUNNING XP SERVICE PACK-2. I have a p4 3.00GHz Prescott with core speed 1995.78 MHz, Multiplier x15.0(14-15), BUS speed 133.05MHz, Rated FSB 532.21MHz, MOBO P4S8X-MX, BIOS(American Megatrends Inc. V1006.002, 2005) , Graphic interface AGP v3.0 8x transfer rate, with PC3200 (512 x 2) RAM, 2.5 v both ,one166MHz-(lat-2.5), other 200MHz -(lat-3.0), with GPU-741_760_760GX_M661FX_ M661MX_M741. do i need a graphic card? kindly suggest any compatible budget one