Happy to help.
Yeah, upgrading your power supply is worth a shot. Yesterday, as I was on my way to best buy I had that little annoying voice in the back of my head saying, "this isn't going to work moron, your just wasting your money now..." But it did and I was really pleased with the results. Before I installed the new power unit, I was suffering all kinds of clitches: system crashes, slow speeds, and of course the flickering graphics. Everything works great now though. If you have a real slick card it will draw up to 110 watts at times: so sayith the tech from BFG. That was almost half of my previous power source's juice, no wonder I was having such a headache. I went ahead and spent a couple extra bucks and sprung for the Antec 480watt power supply. Its beefy and comes with some really nice cables and harnesses. It scored a 10 on Maximum PC's gear list for what its worth. I could have bought one for cheaper, but so far in computers I've found, unless you're really lucky, you get what you pay for. Give it shot, worked for me.
-Azezul
minion of the devil