Restore Windows XP registry from a restore point

1. get in to c:\windows\system32\config folder
rename default default.bak
rename sam sam.bak
rename system system.bak
rename software software.bak
rename security security.bak

2. "system volume information"
cd _restore{987E0331-0f01-427......}
cd rp139...(the latest one).
copy :
_REGISTRY_USER_.DEFAULT to c:\windows\system32\config\default _REGISTRY_MACHINE_SAM to c:\windows\system32\config\samtype: _REGISTRY_MACHINE_SECURIT to c:\windows\system32config\security
_REGISTRY_MACHINE_SOFTWARE to c:\windows\system32\config\software
_REGISTRY_MACHINE_SYSTEM to c:\windows\system32\config\system