image path

I built this goofy little newsletter app using fckeditor 2.6.5 as the editor.
I can't figure out how to set the path correctly for images to display in the email
Where would I set this ? I am just using the default folder that fck creates to hold the images, but I set a variable holding my site address in another folder ../Your_Settings/NZ_Globals.php
on that NZ_Globals.php I set my site address like this..
$NZGLOBAL_siteaddress = "http://www.mysite.com" ;

Any help would be greatly appreciated