Hi
If you mean open it up in a new browser window, then you could add an on(release) event to the movieclip that your image has been loaded into and use the getURL function to call a javascript function to open a new window with the url of your image.
PHP Code:
in the flash movie
on(release){
getURL("javascript:newWindow('yourDomain.com/images'" + imageName + ".jpg,'newWin','height=200,width=400 //or what ever options you want on like scrollbars etc//'")
}
javascript function
<script>
function newWindow(url,name,options){
var newWin = window.open(url,name,options)
}
</script>
you would need to have a variable or something in the movieclip that stored the name of the current image.
Hope this helps a bit
Dan