Not well at all, maybe on the very lowest settings. That machine just isn't a gamer, and bringing it up to snuff, if possible at all, will cost more than just building a gaming PC from the outset. It has no video card; upgrading to anything decent will also mean replacing the PSU. Then, you'll be limited by a muttly CPU. I would suggest looking at the most recent System Builder Marathon articles, specifically the $500-$550 builds. Then post a new-build thread on the forums for further advice based on current pricing and availability.