solaris07 - 5:49 pm on May 6, 2008 (gmt 0)
I would suggest TinyMCE. Will I don't know of any WYSIWYG editors that format the same as MS Word, TinyMCE is probably the closest. It has a setting actually for pasting text into it from MS Word and maintianing the format as much as possible. Many mainstream CMS systems use TinyMCE as their default editor too.