You can find the Wayback Machine here:
http://archive.org/web/web.php . It crawls the internet to archive all the websites it can get to.
To use it, put the URL into the empty space that has http:// in it. If you are copying and pasting a website, be sure you don't have 2
http://! Just one. Then click on "Take Me Back"
Once you do, you'll see a calendar, with the months and days on the bottom, years near the top. The years with the black lines (this will make sense when you see it) are the ones the Wayback Machine has archived. Pick one, and it will take you to that year's calendar. The days hilighted in blue are the ones that have been archived. Click on any blue day and it will take you to the site as it was on that date. If you can't find what you're looking for on that date, try an earlier or later one.
And this works for ALL websites that have been Archived by the Wayback Machine - most have, but not all. Hope this made sense.
Have fun!
Alli