Barcode generator for PCR primers - (Dec/13/2012 )

I am looking to tag a set of primers with barcodes for checking the possibility of adding an additional multiplexing step in massive parallel sequencing.
I would like to know if these is an open source software that can be understood by a total novice, which would generate PCR primer compatible barcodes? The primers are for a normal PCR.

Thank you.

I recommend some NO SPAMMING LINKS! to you, you can find some useful templates.

Thank you but this is not the type of barcodes that we use in molecular biology.