Unable to log in via FTP
Using Jamroom
That makes more sense now. You're talking about trying to get your marketplace settings working. Right now when you try to use the marketplace are you unable to install modules?
Do you get any errors?
If the marketplace is working then you dont need to enter any details there. Its a workaround method for if your system is unable to write to the modules and skins directory. You can fix that issue by allowing your system to write to those directories.