"insert external image" will be removed from the toolbar.  "insert external image"  uses the MSHTML built-in function, which causes some confusions for the end users.

Please check the CuteEditor for ASP latest version.

http://cutesoft.net/asp/EnableAll.asp

With this new version the end users can easily update the image properties, including: border, width, height, alt, align, vspace, and hspace. 

asp.net Chat http://cutesoft.net/ASP.NET+Chat/default.aspx
Web Messenger: http://cutesoft.net/Web-Messenger/default.aspx
asp.net wysiwyg editor: http://cutesoft.net/ASP.NET+WYSIWYG+Editor/default.aspx
asp wysiwyg html editor: http://cutesoft.net/ASP
asp.net Image Gallery: http://cutesoft.net/ASP.NET+Image+Gallery/default.aspx
Live Support: http://cutesoft.net/live-support/default.aspx