As far as I know it doesnt really. You can change the template and
move the logo somewhere else....
But you did not say which servu version you use...
I assume you checked out (for example) the Client\web client
\login.htm
Search for for SULoginLogo . Just before that you will see
width="400" height="100"
I see no reason why you cant change that... But you would need to
change it in all the htm files in which it occurs... (I assumed you at
least are at serv-u 9).