I used to use a program called genious (i think that was the name) but its been awhile since I've used it so theres probabally something better. A good place to go though is cnet. They rate programs and stuff and you can download them there. Go to Downloads Hope that helps.
i used cuteftp also, but every onece in a while it would give me an error about something, and close down. comparing sizes of a file or something. i downloaded the new version and it gave me the error whenever i opened the program. that program is not free anyway
Oh... are you talking about a program that uploads to an already exhistant space???
I use FlashFXP. ITs great... if anyone needs the key crack, i got it. This is a great program that i used so i can transfer files to and from my xbox as well.