As far as I know, there is no way to set a RichText field to automatically "PassThruHTML" its content on save.
This becomes necessary when you use a web RichText-editor like FCKEditor, Tiny HTML Editor, etc.
The workaround is to do this on WebQuerySave ...
for ajaxian approaches it is not desired that agent print out by default html as you can see in the attached image. it would be nice if you could check a box which makes sure that web agents do not cast out more than you desire.