Get a normal keyboard and mouse saves 50$
Get one harddrive... more than fast enogh... save 90$
Get XP home oem, save 50$ with what you listed no need for xp professional at all. Weather its with sp2 or not doesnt matter since you have flatrate anyway.
DVD RW is to expensive.. can get for 100$ ... save 30$
Get a DVD Rom instead of a CD ROM, pay 5$ extra.
scrap the CRT monitor 115$
now for the 330$ Get a TFT display.