Hey, I've been looking around for a good decent PC. There's this one being sold by TigerDirect. It's a Gateway GT5453E with AMD Athlon 64 X2 4200+ 2.2 Ghz(Dual-Core), 1 GB DDR2 RAM, 320 GB SATA II HDD, 20x DVD-RW Dual layer drive and Flash media reader. It comes with Windows Vista Home Premium. Graphics is by an nVidia GeForce 6150 SE chip.It's being sold at $330. Is this system worth buying? It has 4 PCI Express slots on which I can install another video card to replace the crappy 6150 chip. Thanks.