Download All pictures from a Forum, possible?

I was wondering if someone knows the way around this problem. I am trying to download onto my hard drive all of the pictures on a forum. The pictures are not on the forum iteslf but are linked from Imageshack and Photobucket.
So the are http://Web address to picture

The problem is all the website downloaders only work on the basic URL membership entry. I.e where the username and password is in the url. But forums do not use this they have a form to fill in on the website.

So how do i get around that as when i set my website downloader away that is the stumbling block.

Or is there a way i can just download all the images hosted on the site.

If it is a progam which would i use.

Thanks
Anthony