Both, and neither work properly. It's been ages since I've used BartPE or UBCD4WIN. Add the drivers is mostly straight forward. It's getting the LG tool to play nice that is the issue.
Sosaudio:
What are the chances that you have a spare partition that you can just install XP on for a few days? I ask because XP can be run for 30 days as a demo without a CD key and that would be long enough restore your phone to stock. After that, you can blow away that partition like nothing happened.
Ugh! I don't have a partition to give to it. Plus the XP disc that I have is prior to sp1. Do you think if I did an external USB drive connected my laptop with the BiOS set to boot USB first, I can steer clear of partition issues and boot loader confusion?