5
you can just make a new block, instead of us teaching you about template over riding.
anyway, in a new block paste one of these
Replace whole button: and define new .submit class (submit2)
<form action="search.php" method="get">
<input type="text" name="query" size="20" />
<input type="hidden" name="action" value="results" />
<input name="submit2" type="image" value="Search" src="<{$xoops_imageurl}>/images/search.png" alt="Search" align="top" />
form>
Change text on regular .submit class
<form action="search.php" method="get">
<input type="text" name="query" size="20" />
<input type="hidden" name="action" value="results" />
<input name="submit" type="button" value="Search" align="top" />
form>
if you look at the line
where it says value="Search" is what will print on your button.
BOL