Marten,

1. When you click the change butto, the hyperlink dialog will be opened. You can modify the settings in the dialog.

http://richtexteditor.com/demo/

2. This functions is same in the new version. Please check the above example. You can also select the hyperlink in the tag selector and modify it.

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