My images all look like gfxartist banners

You probably have some personal firewall/internet security program installed such as Norton Internet Security. It is a program which checks all of your outgoing requests and filters all unneccesary information. Referer information included.

And that is the problem. Due to our current bandwidth problems we disabled hotlinking the graphics by other sites. In other words images you see can only be viewed from the GFXartist site, not by other external sites.

How to fix it?

You need to go to N.I.S. / advanced options. Then 'add site'. Type www.gfxartist.com and press enter. Then go to privacy and set everything to allow as it shows below.
That's it.

Settings for norton: Set cookies and Referer to: Allow