Serious question (couldn't find it and mailing Google is not very effective usually): can I keep my current email address and convert it to paid Google apps? It would be absolutely useless if not :)
I don't think so, at least not directly. Paid google apps requires you to use your own domain name as far as I know. Even so, you can set your old account to forward to your new, and add your old account as a sender on your new and make it the default. That way all email you send/receive on the new account will go to/come from the old account.
