I know this is a newbie question, and I am new to the dedicated server stuff, so...

I have a potential client that is considering moving to Axislayer, but they currently host elsewhere. Their host provided me with a root access username and password, but I don't know how to login via this information.

I thought it would simply be via Telnet or SSH, but it never lets me in via this method (I even tried via FTP).

Am I not using the correct type of software to do this or is the host just giving me problems to I can't help this potential client?