FatMooseHenry,
You may try the following things:
1. Add Uneditable Regions
Demo:
http://cutesoft.net/example/templates.aspx
2.
>> It is of cause possible to remove e.g. the table button and the embed button,
Yes.
You can remove buttons from toolbar or you can build your own toolbar.
>>but is it possible to set a set of legal tags in the editor that is allowed or do I have to filter it my self?
You have to filter it yourself.
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