Session State problem

[Mike Kansky]

I have created mypage.aspx page that does some useful things based on a
session id. Let's say it determines visitor's country.

I am accessing this page using the following technique - <img
src="domain.com/mypage.aspx">
I installed this tag on multiple pages of multiple sites.
Here's the weird thing: Every Time the page is accessed it creates a new
SessionID for the same visitor!

Let's say i have a site with aboutus.html and services.html that have the
tag <img src="domain.com/mypage.aspx"> in them.
When user browses this site and goes from aboutus.html to services.html,
mypage.aspx on my site will create two sessions!!!

Is this normal and if yes, is there a way to preserve the session id for the
same out of process visitor, based on the above scenario?
I gotta find a way...
Thanks.