Pretty sure this has already been done, but I saw mudkip's gamecard generator in a console and thought i'd make one in windows form so you can copy and paste it.
Pretty simple and it gets the job done. I can't guarantee that any of these codes will work, but they're pretty good for scamming or trying to get one to work.
To elaborate more on why there are six textboxes: the top 5 are easy highlight boxes for trying code on blizzards site and the bottom one is easy highlight for scamming or sending whole codes.
Generator:
http://rapidshare.com/files/25202588...dGenerator.zip
Messy/lazy source:
http://goldfish1.pastebin.com/m73f6fdab
OK how do I attach files on here?
"GamecardGenerator.zip:
Upload of file failed."