Registry cleaners are unnecessary and could potentially cause
problems. However, if you really want to use one, I suggest trying
System Mechanic (www.iolo.com). It is designed to work properly
with Windows XP.
TONY;
All of these are Free.
EasyCleaner V2.0 http://www.toniarts.com/ecleane.htm
[searches Windows' registry for entries that are pointing nowhere. EasyCleaner
also lets you delete all kinds of unnecessary files like temps, backups etc.]
Good Registry Backup Utility http://home.t-online.de/home/lars.hederer/erunt/
ERUNT The Emergency Recovery Utility NT & NTREGOPT NT Registry Optimizer
Registry Backup and Restore for Windows NT/2000/XP & Registry Optimization for
Windows NT/2000/XP