If you have compression enabled on your dial-up modem, you should at least hit 80kbps on the upload, maybe even 128kbps if you're lucky. That's more than the download, so really, if you send a ZIP it should work within a few minutes if it's small. Otherwise, I have DSL with a lot of upload (1,500kbps or 186KB/s) so I'd be more than happy to upload the files for you.
Also, check out Fantastico if you can in cPanel. It might have the software you are looking for.