The nicklist is resizeable .. click on the left side of the nicklist and drag it where you like. If you go into Alt+- (Alt Minus - the control menu for that window) -> Nick can choose between Left, Right, Off or Default. (If this is what you had in mind; I couldn't make out exactly what you meant, either.)

DALnet: #HelpDesk and #m[color:#FF0000]IR[color:#EEEE00]C