If the board still works, I would not change it and add a separate graphics card instead, such as the 210 or 5450 (both might work with your power supply). Your windows coa may not post with a non acer board. If you change boards, any g31 and some g41 boards using ddr2 will work, but you won't gain any performance advantage. My local craigslist had a q8200 for $49 yesterday; you might look for a cpu upgrade instead, but you have an older nvidia chipset board, so the newer cpus may not work. You don't need a 32 bit board; that only refers to your windows installation. Most newer cpus will run 64 bit windows.
Thanks for your reply the reason I want a 32-bit motherboard is that I just bought 'windows 7 32-bit' and I have recently bought a graphics card (Asus HD 7750),500 watt power supply and a case fan. the motherboard seems to be slower since having the card since it sucks in 400-500 watts
Oh ok, So if I bought a 64-bit motherboard windows7 32-bit would work on it?
and do you know if the memory on the aspire motherboard will work on other 64-bit motherboards or should I ask someone else? I know the cpu will probably wont