Hello Hiram, sorry for your eBay troubles...
You seem to understand the basics of computers and how eBay works. If you're going to use your girlfriend's account, make sure to change ip addresses, delete your cookies and flash objects. I don't recommend using TurboLister but if you know what you're doing you can get around eBay using it to link you to a previous account.
I would recommend reading eBay Stealth, it shows you what eBay does to link your accounts, and how to create a new eBay and Paypal account if necessary. What I really recommend is reading how eBay links your accounts, since you have a secondary account ready to go but you're not 100% sure how to protect it.
Good luck to you,
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