The following websites are highly recommended as good sources of information:
Mushkin Enhanced Memory Systems
Howstuffworks "How Computer Memory Works"
Memory upgrades from Crucial.com - Glossary of terms
Micron Technology, Inc. - Corporate Web Site
Memory upgrades from Crucial.com - A memory and RAM upgrade ...
Trainwrecker Computer Addicts/Thermaltake Ram Cooler Review
Memoryman - High performance computer memory, and computer ...
Computing.Net - memory upgrade