Now, the motherboard is an i845G chipset with a Celeron Processor~2500mhZ with 128KB of L2 cache, 128 MB of ram~200 mhZ, and an Intergrated soundcard (Realtek AC'97). I recently upgraded the onboard audio to a Sound Blaster Live! 24-bit soundcard. A for upgrading the video card, I can't. The motherboard doesn't have an AGP slot and only comes with standard PCI slots (no PCI-Express). With this info, what is the best thing to do besides buying a new motherboard? Also, what are my upgrade options? (P.S. I recently started playing 3D-intensive games)