How Do I Make Random Images Not Random?

However, what I want to do is include a request.querystring("ID"), so that IF an ID is defined, eg ID=3, , it will display the relevant (not random) information. I've tried this every way I can think and get type mismatches, etc etc. It's probably really simple but I can't see it.

<%
limit=3
redim link(limit)
redim image (limit)

link(1)="xxx"
image(1)="image1.jpg"

link(2)="xxx"
image(2)="image2.jpg"

link(3)="xxx"
image(3)="image3.jpg"

randomize
random=int(rnd*limit)+1

%>
<center>
<a href="<%= link(random) %>">
<img src="<%= image(random) %>" border="0"></a>