In that case go and visit http://www.registrycure.info/
Now back to the technical stuff. It is simply because of the complex structure and nature of this database that you require repair software to fix it up. Going at it manually and making an effort to remove or edit certain keys is not recommended because one bad choice could cause possible failure to critical system components. This in turn could prevent certain programs, devices or even features to run correctly which will result in you wasting your time to reformat or get it repaired. This is why repair software is the easiest and best solution to fixing up performance and other error issues within Windows.
The typical symptoms that could signal problems inside the registry include frequent error message pop ups, occasional crashes, program stalling as well as poor functionality and speed. It's at this point that you really need to scan your PC because if you ignore such problems and have the belief that they will subside then you should expect the worst to happen as thing will only compound and get worse. The modifications and removals to software and device drivers among other things will leave redundant entries within this file structure and will consequently halt performance.
If you want to check out that Windows XP registry repair tool then visit http://www.registrycure.info/

