Lots of folk seem to have trouble posting pics myself included. this is how I do it now –
Just sign up to photobucket and upload them there. Then go to each pic and in the box to the right click DIRECT it will copy the url. Come to the forum and in the reply box on the icon bar hit the one that says img it will put up a url box delete the http// text and paste the link and your done!!
I’ve posted elsewhere but http://www.imgur.com is easy. No need to sign up, just upload, note the URL (for blogs in this case) and insert in your post. Also retain the ‘delete’ URL as well for if-and-when you might want/need to take the pics off of imgur.