Make thread content appear as default text in form

[Crezza]

Hi

This is what I am trying to do.

1) User pushes button
2) Button creates message area, rather than seeing a blank area they get the content of the thread (which can be edited) - this would be rather like an enhancement of the quote functionality but to include the whole thread rather than one post
3) Click button and the message is pm'd to the users own account (easy bit)

The bit I'm struggling with is getting the content from the thread into the wysiwig editor. I wonder if there is already a hack that does this.

All help appreciated,
Stephen