Hello!
I need to do a journal entry for payments from 4/11/07 to date that are interest not principle reduction.
Please help!

The journal entries are picked up from the actual payments:-

DEBIT Interest Paid Account
CREDIT Bank Account.

Incidentally the word you need to use is PRINCIPAL not PRINCIPLE.

Debit Interest Expense for the amount of interest paid
Credit Cash for the amount

Theoretically, that's a prior period adjustment. Is this for class, a small company, what? The correct way to take an expense back to 2007 is to subtract it off the beginning retained earnings and not to charge 2007/08 into 09. But for a small company, you might get by with that, depending on who's using the statements and how material it is.