Load Image If - Multipule Use locations

[nightmaregenerator]

So I have a form which I want to load a certain image if the right information is entered, so my formal is this:

=IIf(IsNull([text97]),"",IIf( [text97] ="THE ZOMBIES ARE COMING!!!","C:\Documents and Settings\Jason\My Documents\My Pictures\Zombie Lurch Left.png","C:\Documents and Settings\Jason\My Documents\My Pictures\Zombie Lurch Right.png"))

But the problem is that I want to put this database up for download, but the location of the image then changes and stops working, is there a way where I can do something similar using a URL or is there another method for loading the image in the right condition?