Norton 2003 could be the problem. If you are not confident to make a Registry cleaning, format and reinstall will be the best and believe me, the fast, way to get a stable system.
If you can, please, make at least 3 partitions in your HDD:
- Programs (and OS)
- Personal data and configuration files (Office templates, etc.)
- Backup/System Restore/Setup files/Miscelaneous
This way you will be able to recover your data and configuration when something wrong occurs with the program (1) partition…
I don’t know if XP Home has or not this feature: Administrative Tools > Services > Action > Export list.
My friend, only few forums hear you in fact 