Im generally pretty happy with my Dell E510 mce computer. It's about 5 years old now and with the advent of blu-ray I'd like to be able to play blu-ray movies on it. Trouble is, when I try to now, my radeon x600 cant handle the load. Blu-ray plays but stalls frequently. I have 2 gb of memory currently. What do I need to upgrade to have blu-ray videos play smoothly? Will more memory do the trick? Or do I need a beefier graphics card? Also the 305 watt psu is a consideration. I can upgrade that but would prefer to not go there if I can get away with an upgrade without doing so. Thanks for any and all advice.