How to make an "import image" button/field in a PDF form?

I am designing a "Lost Pet" poster for a local animal shelter. The idea is to make a PDF file that users of the shelter's website can download, insert their pet's information, and then print it out if their pet goes missing.

I will be designing the poster in InDesign CS3, and then exporting it to a PDF file. I will then add form fields for the user to fill out.

I am ok with making text entry form fields. That is a simple matter.

What's not so simple is figuring out a way to allow the user to insert a photo of their lost pet into the PDF, save the file, and then print it out with the photo in it.

I am running Adobe Acrobat Professional 8. I am running it on a Mac. All of the searches I've done have told me that if I was running Acrobat in Windows, I'd have access to this other program called LiveCycle Designer which has pre-built form item libraries, including a Image Field. But I cannot find any similar option on the Mac version.

Has anyone has any experience doing something like this? If so, I could certainly use some tips on making this work.

Just a quick clarification...

This is a volunteer design project that I am doing for the shelter, so I don't want to spend money on any extra software/addons at all. I am hoping this can be done somehow with the pre-existing software I have.