Yeah, that's a really bad idea.
I honestly don't think I'd even try that if I were you...
I too am worried about how to fund the account, but I guess I'll deal with that when I come to it. And I can't find the "rules" in Full Tilt's terms anywhere about multiple accounts, etc. I'm not really sure what needs to be done, but this is my guess as to the optimal way to do it:
1. Close the first account. Cash out all $, points, etc.
2. Wait a while (couple of weeks?).
3. Open the new account - clean computer, different IP address, different email address (same name and maybe even mailing address should be ok).
4. Fund it from a different source. IDEALLY.
After the account is up and running for a while and everything is happy, you can probably change some of your info (like Neteller info) back to how you want it.
Again, this is just a GUESS. If support gives you any trouble, you could tell them you closed the old account for Reasons X, Y, and Z, and then changed your mind and opened a new account.
I really don't know. If anyone has any info on this, I'd love to hear it.