If anyone can help me out with this problem I'd be very grateful.

Problem:

Recently after running Norton Antivirus and deleting a bunch of virus and spywares, my XP Home Edition will not even work in safe mode. It logs in and quickly logs off. I can't get past the login screen.

Possible Causes

I know it has to do with me editing the registry in order to remove a virus. The good thing is I made backup of the registry.

Questions

1. Is it possible to restore the old backed up registry file (.reg file) from Recovery Console?

2. How can I restore the old .reg file if above doesn't work?

3. Is there any alternative things I can do?

Any help offered here I'll be grateful for.