Congratulation, NC Sue!
I'm in a similar situation, but it's been about 3 weeks for me, and I haven't heard back from GEMB yet. What address did you use for the GW letter? How did they respond (did they send you a letter confirming the GW deletion, or did the lates just disappear from your credit report)? Would you mind posting the letter (suitably censored, of course) here or sending it to me in a private message?
My situation is a little different, in that the single 30-day late was rather recent (Jan 2008), and I haven't used the account since (paid it off right after the late in exchange for getting some late fees reversed). Also, it's a joint account with my DG, and she was actually the one using it and (not) paying it.

Thanks!
Bob