I thought you could just drop most html straight into the fbml box and it readjusted most of it for you?
As far as I know, there is not a wysiwyg editor for fbml however, you can use the facebook test console to trial and error your fbml code.
File name:
FBML Editor Setup.exe
Submission date:
2011-02-18 03:14:38 (UTC)
Current status:
queued queued analysing finished
Result:
3/ 42 (7.1%)
Antiy-AVL 2.0.3.7 2011.02.17 Backdoor/Win32.IRCBot.gen
Jiangmin 13.0.900 2011.02.17 Backdoor/IRCBot.lxr
TheHacker 6.7.0.1.132 2011.02.17 Backdoor/IRCBot.rkj
http://www.pagemodo.com/
Whats wrong withworks well for me??Code:http://www.pagemodo.com/
http://igniteyourfanpage.com/create/
http://www.blackhatworld.com/blackhat-seo/member-downloads/284730-get-free-fanpages-builder-no-need-fbml-skills.html