I have a Dell Dimension 3000 computer. Currently I am running off windows XP OS, i have 2 GB RAM (bought from dell), an intel pentium 4 processor 3 ghz, 2.99ghz, Im not sure what my power supply is, im have a graphics controller integrated into the motherboard. I have a mechanical hard drive. Now I'm fairly new at this but am familiar with the hardware and working of the computer. I just wanna know if i could change the motherboard to one with PCIe slots to handle a video card capable of playing Shogun 2 or other total war games. All my other parts are up to the standards but it seems this is the only problem. What type of motherboard could i use to integrate these other parts. Would it be possible? What would it affect? Would i need to change any software(I shouldnt)? Any help would be great.