if you plan on upgrading, you should plan on getting the same kind of ram.. the a-data is ok.. but it'll be worth a few bucks more to go with the corsair/geil/ocz value versions... are you selling your old computer? if not why dont you just use that video card? i recently built myself a budget a64 computer for about $500 and i love it
also, i have heard both good and bad things about the chaintechs... i would recommend either an MSI or Abit for mild overclocking and excellent stability 🙂 personally i have an abit kv8-pro...now i know everyone says dont get a mobo with a VIA chipset, but mine works great 😉