Have you tried just copying the code directly? That's what I did, after I uploaded my new theme onto my self-host provider's servers. It didn't take too long. Feel free to contact me if you have questions. I may be able to walk you through it.
Our server supports wordpress.org we transferred all of our files but we can't figure how to make the current blog and the other blog 1 or move it so that it is self hosted. We will be able to fumble through the rest I think but that is the biggest problem. We have a couple of people who would like to advertise with us but I don't feel comfortable until we have this squared away