What I need is the ability for my customers to transfer from a different host to my server as well as for new customers to actually sign up for one of my plans online. I do have a merchant account already, now what I need is help with the scripts, forms and or programm(s) that would enable the transaction to take place smoothly and securely.
I have had some unforgettable help on this forum in the past, I really appreciated it. I hope it would be the same again this time.

Any and all help is equally appreciated.

This is not much of a suggestion, as if I were in your shoes, I'd be asking for the same help really. If you don't get enough help, maybe post an offer to trade programming help for a web hosting account in the Advertsing/Offers forum.

There is an FTP programm out there that does that. I have used it on some occassions, but you have to be aware that not every server will allow this kind of transfer. Some are protected and I know as I have tried that as well :(

The programm I used for transfering files from server to server was called SmartFTP. You can get it at http://www.download.com and just type in SmartFTP at the search. It works without any intervention of the your own home computer like other programms do.

Now this is only a suggestion, so try it on something else first that you can afford to loose if you are not certain if you should use it.