Welcome to the GTA and the Hunting forum!
No it's actually very easy to post pics. Before you click on Submit, check the box that says "Attach a file after posting" at the bottom - then click submit. At the next screen just click on BROWSE and find the pic on your hard drive and then submit that pic. You can keep 'browsing' and submitting 1 pic at a time until you are finished. Then click on "Return to Thread" and that will post your message & pics.
No need to insert a link to Photobucket, etc.