Making Last Known Good Configuration the permanent default configuration in XP

I am running XP Home Edition SP2 with continuous updating from Microsoft.

Recently, when I try to boot, My Dell 9200 runs continuously in a "boot loop". There is no blue screen, hence no error messages. The computer "reboot after power off", feature is disabled. The system will not boot in Safe Mode either

HOWEVER, when I get into my "last known good configuration" [F8 at boot], the system runs perfectly.

I have tried to modify the registry[ \HKLM\SYSTEM\SELECT\] so that the "current" and the "default" pointers point to the "lastknowngood". The system boots once perfectly, and then all the values in the SELECT folder change and it will not boot again.

Does anyone know how to get the system to permanently change the last known good configuration to the permanent default configuration?