SharePoint 2007 allows rich text editing only in IE. For non-IE browsers SharePoint shows only plain text editor. And we will fix this.
There are some tutorials that describe how to add one of popular rich text editors into SharePoint websites: FCKEditor, TinyMCE and others.
It’s a free solution. If you want to pay, you could get almost the same result for $599 if you buy “CKEditor for SharePoint” from authors of FCKEditor