You need relative positioning.
Declare a style called "p1" in your code.
Code:
<style type="text/css">
.p1 { position: relative; left: 50px; top: -80px; z-index: 3; }
</style>
Then use it like this:
Code:
<img class=p1 src=graphics/stu.jpg width="150" height="150"></img>
It need not be an image, but anying, just put a class=p1 in it and will be positioned 50px and -80px relative.
Change the 50 and -80 to any numbers you like. The z-index allows the position to be on top or under.
Take a look at the source for http://www.geocities.com/ototero/n-tri.html.
I've hidden some links under an image. If you keep things in a table, they tend to stay where you put them!