Basically, I would like to be able to have a header like you can have in a group.  Here is the screenshot.

Example

1. Create a css and add it to your current theme base.css file

.forum_image {

background-image:url('http://www.nairatrain.com/...hments/attach_36.jpg');/** OW_Control type:image, section:2. Forum Settings, key:headerImage, label:Forum Header image **/

background-repeat:no-repeat;

width:800px;

height:200px;

font-size: 24px;

color:#fff;

}

Using the above css code will make it possible for you to change your forum header image right from your admin dashboard.

2. In /ow_plugins/forum/views/controllers/index.html find and replace

{if $isModerator}

    <div class="ow_box ow_highbox ow_stdmargin ow_center">

        {decorator name='button' langLabel='base+widgets_customize_btn' id='btn-customize-forum' class='ow_ic_gear_wheel'}

    </div>

{/if}

With:

{if $isModerator}

    <div class="ow_box ow_highbox ow_stdmargin ow_center">

        {decorator name='button' langLabel='base+widgets_customize_btn' id='btn-customize-forum' class='ow_ic_gear_wheel'}

    </div>

{/if}

<div class='forum_image'><h1>Welcome to our Forum</hi></div>

3. Save your change and clear your cache

Hope it works!

Yes uploading in a Post work but not the Header image of the Forum which should be under "Willkommen in unserem Forum"

Screenshot attached: