MadAdmiral's build looks good, assuming there will be no gaming, since that wasn't mentioned. Getting an i7-920 is only $9 cheaper.
I have to laugh though, at bdbeall's suggestion that you need a 1000W PSU, although his build is otherwise acceptable. You could combine elements of both of them if you want to save money; bdbeall's CPU/Mobo and RAM (the dual channel kit), and everything else from MadAdmiral's buiild. If you decide you want to play games after all, a 380W Antec Earthwatts PSU will support a HD5770, although I'd probably prefer the 500W version for a little more headroom and longevity.