underline vs. no underline

[ranz]

in the Styles & Templates - Main CSS in the AdminCP

find the appropriate Customised Style heading, then you need to look for the three boxes Normal Link CSS, Visited Link CSS, Hover Link CSS - and Text Decoration set it to none if you dont want underline links.

I would recommend against not underlining links - as to me this is a "standard" which most people are used to.