Please help! FTP setup problem


I am trying to help a client who just fired their web designer. I was going to change the passwords for users, db, etc. the website is down now because I need to make changes in the wp-config file with the new db stuff and I cannot for the life of me figure out the ftp stuff.

When I use WebFTP I am in some folder and cannot access the root. PLEASE someone tell me how to set up the FTP settings and maybe FTP user to get to the root.

Thank you!