Goodwill has started accepting computers for donation. They are working in cooperation with Dell Computers. They will be accepting donations at 15 donation centers areawide.
A word of caution about this is that if you are going to donate your computer with old sensitive data on it either run a data wipe program, (format isn't necessarily the best option) or remove your hard drive from the computer completely.
This is a great option for people who have an old computer that they aren't going to use anymore.