If you are only going to be running ofice type apps on this baby, you may want to look at Semprons/Celerons. Both are sub-par, but can handle the text heavy office stuff with ease, even if they will be a tad slower on the other stuff. but, since it's not for gaming...
Also, if you can get two hard drives to set up in RAID 1, do it. By mirroring your hard drive, you have a complete back-up in case the worst happens.
Be sure that you have a good firewall and anti-virus. No sense in spending good money on this stuff to just let anything and everything crawl into it.