The most important thing about the registry is to back it up before you edit anything!
This page is for windows 2000 but almost all of it pertains to windows XP as well.
It will detail the ins and outs of the registry through regedit.exe and regedt32.exe
http://articles.techrepublic.com.com/51 ... 33644.html
This site has a lot of tip on what you can do with the registry you just have to ignore the ads.
http://www.winguides.com/registry/



