Hi Steve,

I think this is what you are after.

<script language="JavaScript" type="text/javascript">
<!--
function AddValue(StrName){
	var CurrentValue = '12-Pack Cooler';
	window.document.getElementById('item_name').value = '' + StrName + ' ' + CurrentValue + '';
}
//-->
</script>
<select name="D1" size="1" onChange="AddValue(this.value);">
    <option value="Alabama">Alabama</option>
    <option value="Arkansas">Arkansas</option>
    <option value="Auburn">Auburn</option>
    <option value="Clemson">Clemson</option>
    <option value="Duke">Duke</option>
    <option value="East Carolina">East Carolina</option>
    <option value="Florida">Florida</option>
    <option value="Florida State">Florida State</option>
    <option value="Georgia">Georgia</option>
    <option value="Indiana">Indiana</option>
    <option value="Kansas">Kansas</option>
    <option value="Kansas State">Kansas State</option>
    <option value="Kentucky">Kentucky</option>
    <option value="Louisiana State">Louisiana State</option>
    <option value="Michigan">Michigan</option>
    <option value="Michigan State">Michigan State</option>
    <option value="Mississippi">Mississippi</option>
    <option value="Mississippi State">Mississippi State</option>
    <option value="Nebraska">Nebraska</option>
    <option value="North Carolina">North Carolina</option>
    <option value="North Carolina State">North Carolina State</option>
    <option value="Oklahoma">Oklahoma</option>
    <option value="Tennessee">Tennessee</option>
    <option value="Texas">Texas</option>
    <option value="Virginia">Virginia</option>
    <option value="Wisconsin">Wisconsin</option>
    </select>
<input type="hidden" name="item_name" value="12-Pack Cooler">
<input type="image" src="http://www.paypal.com/en_US/i/btn/sc-but-01.gif" border="0" name="submit" alt="Make payments with PayPal - it's fast, free and secure!">

I hope I understood what you were after.

Kind Regards,
Tarran Walker