if anyone out there can help with this, that would be awesome

i'm creating a web porfolio and for navigation i'd like for someone to be able
to click on a button and be able to select a
thumbnail of one of my websites very similiar to what's found on
[url]www.envisionmedia.com[/url] (web design tab)
only i need also for the thumbnails to link to the website itself so that the
viewer can see the entire site in another window and close it so as to go back
to the main navigation
please hel
thanks!!!!!!!!!