Hello

i would like to place a button in every categories-description-page (on the forum index-page). i wanna place the "new topic"-button there and when you click on it it is refering you to the "write a new topic in this section"-page

i think this is possible... is it? how do i do it?

version: invision

<a href="TAGET WEBSITE ADDRESS HERE"><img src="IMAGE ADDRESS HERE"></a>

Do you mean changing the New Post button in the forums?
Administration Panel > Display > Colors & Pictures > Pics Management
Advanced Mode
Buttons Tab
Post new topic :

If you want a clickable image, then you can use the code that promotemeup posted.

Promotemeup gave me the answer! sorry about the bad explanation
Thank you!