Buy a new Dell Optiplex 360 Mini Tower, complete with Win7 Pro and an 18.5" monitor, for only $509 after $319 in instant discount savings.
This is an excellent small business desktop computer, with a full 3 year warranty. It also has the Professional version of the new Microsoft Windows 7 operating system.
Plus you can get free 3-5 day shipping when you spend $599.
This Dell Optiplex 360 MT computer system includes the following.
You can upgrade to 4GB of RAM for $66. Upgrading the hard drive to 250GB is only $10, while going up to 320GB is only $18. For only $44 you can add a 16X DVD+/-RW drive with Roxio Creator and Cyberlink PowerDVD software.