I forgot to mention that I have tried using notifymessage="%userdata%"
with no success, so I did read the manual...
[wordpress_file_upload uploadid="2" uploadpath="root/wp-content/uploads/posteruploads" uploadrole="all" maxsize="1000" createpath="true" askforsubfolders="true" dublicatespolicy="maintain both" uniquepattern="datetimestamp" placements="title/userdata/message/filename+selectbutton+uploadbutton" uploadtitle="" notify="true" notifyrecipients="help@comminfo.rutgers.edu" notifysubject="Poster Request" notifymessage="%userdata%" widths="filename:400px, userdata_value:400px" userdata="true" userdatalabel="*First Name/*Last Name/*Email/*Account to be Billed/*Poster Size/*Date Required By"]