Hehe, I think you should read a book about HTML..
When you submit a form, it will send each form-object as a variable.
Your HTML looks like this:
<select name="lname">
<option value="Sjoerd Surname">Sjoerd Surname</option>
<option value="First Last">First Last</option>
</select>
So when you submit the form, only a var called lname will be added to the url. The value of that var is the option you have selected.
To get a URL like fname=a&fname=b you have to make two <select> fields. One named fname and one named lname 🙂
BTW: URL won't look like this:
kbgsearch.php?fname=a?lname=b
They will look like this:
kbgsearch.php?fname=a&lname=b