Let's see if I can clarify....
An image on site 1 would be something like:
<img src="/includes/promotion.gif">
To use the same on site 2, you would use something like:
<img src="http://site1.com/includes/promotion.gif">
Notice how the link on site 2 references site 1. In order for this to work, you will also need to either have hotlinking protection turned off for site 1 or preferably add the domain name for site 2 in the list of approved sites that are allowed to hotlink.
I'm wondering if you have hotlink protection turned on and this is why what you tried didn't work as expected...
Hope this helps
- Marc
EDIT: Okay, looks like someone else made a similar clarification... I really need to not get sidetracked when making replies and get them done faster
