For anyone who has renters insurance or just likes to keep a tab on all the stuff they own, Insurance Information Institute [iii.org] makes a program called Know Your Stuff, that is designed for total home inventory. It seems to work very well. Provides fields for things like price, make, model, serial number, description. It even allows you to embed a photograph of the item as well as a picture of the receipt if you have it.
The best part about it is that it's free for download:
Unfortunately it is only available in Windows and Mac OS. Works in Vista.