You can use any am2+am3 micro atx board you desire. All work with am2 or am3 cpus and ddr2. Newegg has some for $40 with free shipping, last time I checked. You'll need to reinstall your windows operating system unless you've already upgraded it and possibly obtain a new windows coa number. The original only works with hp boards. If you want to upgrade the ram, then get an am3 board with the same chipset. DDR3 is still cheap; newegg had 4 gb for $38 the other day with promo code plus you got a $20 rebate making it around $18 after rebate.