IDCS3 How to convert checkbox into form button in PDF?

I have an InDesign CS3 document that has lots of text checkboxes next to items in a list.

I would like to be able to export this doc as PDF and have those checkboxes turned into form buttons that the reader can toggle on or off to indicate items that the reader owns.

Then the reader could print the PDF and they would have a nice neat record of their items.

At present I don't need to have these PDF forms returned electronically or tallied or anything. The idea is just to use the PDF as a personal inventory.

So I'm hoping there's some easy way to globally replace my text-based checkboxes in IDCS3 with buttons that look the same but which will be recognized properly by Acrobat as interactive objects the state of which can be toggled with a click.

The Form Field Recognition feature in Acrobat doesn't recognize the checkboxes as buttons, so I'm assuming I need to tag or change those checkboxes in my InDesign doc, but I'm not sure how to do so.

I've tried reading all the help files and searching these forums, but can't figure out how to do this. Any suggestions would be greatly appreciated. Thanks in advance!