Although it is agreeable that it looks a lot like other proxy sites, I actually like this layout over others. Try to use a little javascript so that when we click on the input box, it clears the current text (or the place holder text you put in there). Also try to have a little hover effect on the submit button.
You can accomplish the clear input field with this:
CODE
<script language="Javascript">
<!--
function doClear(theText) {
if (theText.value == theText.defaultValue) {
theText.value = ""
}
}
//-->
</script>
Input
CODE
<input type="text" size=20 value="search" onFocus="doClear(this)">