newbie trouble with resuming downloads/uploads

Hi everyone

I'm in the process of switching to another host for my site and I have to download and reupload my whole site
it's about 100 Mb at the moment and I'm on a 56k line, it may have hang down...

I'd like to know how to set smart FTP to automatically redial the connection and restart uploading/downloading everything

I think it should be done using global queue but I don't know how to do that, I always used smart FTP for transferring little files, quite never larger than 5 mb and I have no idea on how to deal with such a problem on a 56k line

thanks to all of you