For those that are wondering how to make a membergroup name an image instead of just boring old text, here you go.
Go to Admin -> Membergroups -> {Group} Modify -> Group Name
Then, do the following
<img src="http://www.url-to-image.com/image.jpg" />
Add that as the Membergroup name INSTEAD of entering text.
Remember to replace the URL provided with the actual URL of the image you are using.
See attached screenshots for a demo 
* This tip works for board names as well.
** I Highly recommend that you host the image on your site as it will speed up the loading time of the image and prevent lag on your site.
Do you know which results did i got becouse of this code ?
This solution destroyed my forum , and now i dont have any option te repair it ... The only solution is to delte my forum and install it again and to upload my files and do edit settings ... Everything from start. Thank you very much.
This are the results of this solution :

And when i press " Change / Edit " i got this results , so no way to repair it ...

And normally it should looks like that :

So now i need to reinstall my forum , right ?
Thank you ............