I've tried to run the script, but I get the following error: 
"Applescript failed.
Error using Applescript OCR_using_Acrobat.srpt on the file [file name].pdf."
I've never created an Applescript before, so I suspect that's my problem.  I opened AppleScript Editor, Clicked on the Record button, pasted the text of the script from macdrifter's post, clicked on Compile, and then clicked on Run, which caused Acrobat to open.  I saved the Script as OCR_using_Acrobat.srpt in Library/Scripts/Applications/Acrobat.  I tried to run it on a folder containing scanned PDFs, and when that didn't work I removed all but one of the pdfs thinking that the problem might be the number of pdfs in the folder.  Same error.
What am I doing wrong?