That is a really low power supply, and I dont know if you would need a low profile card. Something like an ATI HD4550 should probably work. According to the AMD website, it requires less than 25 watts max. There should also be a low profile version available I would think. If you want to do gaming, which I assume you do since you are asking about DX10, a HD4670 would be much stronger, but I would not trust it on a 220 watt power supply. Do you know what the amps of the 12volt rail are for that power supply??