In template.css you could change .inputbox and .button, .button:hover which you could give width and height to make it bigger. I would div.search in front of the two as well so not all input boxes will be affected.
div.search .inputbox {template.css (line 183)
border:1px solid #999999;
height:30px; /* added */
margin-bottom:1px;
}
div.search .button, .button:hover {template.css (line 177)
height:30px;
}
div.search input, select, textarea, .inputbox {template.css (line 166)
font-family:Tahoma,Arial,sans-serif;
font-size:140%;
padding:1px;
}
But then we aren’t done yet as it still doesn’t look that good. I would still need to play around with it some more. Will try to find the time. The addition of div.search in front of all changed classes to only affect the search input box I haven’t checked yet so you might have to remove div.search …