My current PC is really outdated (I bought it in 1999 and haven't upgraded it since then), and I'm planning to buy a new one. So far I have a Athlon 1Ghz400, a Leadtek GeForce2 MX400, 512Mo DDR PC2100 and my motherboard is a MSI one. I just need a new motherboard, a processor, a video card and memory bars because my sound card and my cd / dvd reader/burner still work fine.
I thought about the Athlon XP3200+, which looks really cool (I've never bought Intel stuff and I don't want to start doing it), but I'm sooooooooo unaware of the good stuff that are currently available on the market. My company is giving me credit for that new computer, so considering you have unlimited amount of money (OK, not really, but you got the idea), what would you buy? Processor, motherboard, video card (TV output needed) and memory (amount+kind).
Thanks for your help

PS: does PC2100 memory bars work with PC2700 or higher ones?