Goroth, you are a genius to post this code. I'm only sorry it took me 3 days to find it! I did find lots of posts asking for just this answer, and was almost tempted to post my own in the hope I was missing something.
I am tempted to post this back on again with a new title, with a link to your post in case there are any other poor newbies out there just trying to load an html page into their freetextbox and save it afterwards...
Cheers - you've saved my sanity
Ross