well first off in your ubbt_unregisterednav.tmpl and ubbt_registerednav.tmpl is the line?
<a href = "$phpurl/dosearch.php?Cat=0&Forum=All_Forums&Words=&Match=Entire+Phrase&Old=1day&Limit=25&bodyprev=1" $target>{$ubbt_lang['24HOURS']}</a>
or
<a href = "$phpurl/dosearch.php?Cat=0&Forum=All_Forums&Words=&Match=Entire+Phrase&Old=1day&Limit=25&bodyprev=1" $target>24Hrs</a>
if its the later you can just use a <font class="white"></font> in the .tmpl to make it white but it will still have the underline. and it won;t change when it gets hovered over. thats the simple way. if you want to get more technical you will have to dig thru the code where it calls the menu bar and probably alter that alot.
btw all the links are tied to a:hover, a:link, a:visited or .onbody a:hover, .onbody a:link, and .onbody a:visited in the css depending where the links are located. All links have an underline under them in the threads.
