Batch modify PDF-files

Hi, We're looking for someone to make a small program for windows that should batch edit .pdf-files. The flow should be this: *The user starts the program *The user selects either a pdf-file or a directory - IF a file: the program will do "A-C" below for this file. - IF a directory: the program searches through all subdirectories of this directory, and for each PDF-file within completes "A-C". There should also be a progressbar showing a percentage of completion (measured in number of pdf's). A: opens the file in the background and scan through the file and look for a certain object B: If this object is missing from the file the program will then add it to the file, save the file, and exit. C: If the object is pressent the program should exit the file without saving it. *The application should be quick. Looping through 1000 pdf's should take no more than 1 minute. For us to review your bid please provide us with a list of previous PDF-applications you have done, along with website, name, and emailadres for the companies you worked for so we can contact them for references. Please note - we will not look at your bid unless you provide us with this information about PREVIOUS PDF EXPERIENCE - no template bids. Looking forward to your cooperation, Dalaij When it's done we want the full rights to the software, the full sourcecode, etc.