First you have to get the Bowtech banner from somewhere. Clicking on their website and right clicking on a banner should work. Save it to your hard drive.

Then, you need a graphics manipulation program like MSPaint or PhotoSuite to add whatever words/graphics you want to the banner. You can get these programs from download.com.

Then you need to upload the finished products to a website like those listed above...photobucket, etc....

Once the pic is uploaded you need to go to your profile via the profile link in the upper right hand corner of any Hunting.Net screen and enter the web address for where you have the picture stored online.

That simple.