I'll post how I did this, but I added a new feature to the hotlist. Some people have complained that when they clear their cookies out, they lose all their hotlist links – or if they come here from two different machines, they end up with two different hotlists (because the script is cookie based – and the cookie that's on one machine will not be the same as on another)
Well, thanks to a little nudge from Promoguy, I created a page which let you save your hotlist and use the same list on another machine. Changes you make to the list on one machine, will be seen on another once you've set the same cookie id (using the script on the page).
So without further ado – here's the "save my cookie!" page.