dont go alienware, they overcharge alot. If you could, custom built is the best buy and you only get what you want, the companies like cyberpowerinc.com or ibuypower.com seem good, but me and someone else on this forum got damaged computers from them (i needed a new motherboard). So what you could do is buy an HP or something, and then just upgrade it. You can get HP's now that have AMD Athlon 64 3700+. If you can build it though, i would recommend newegg, you could get a seriously nice comp for under $2800.