Just worth noting - After some tinkering I got mine to work with but on upload the app didn't look good on the old keyboard BB's so it got rejected. It was over a month ago I did it and didn't really think it was worth spending too much time on atm
It was the BB export i used, you need to apply for, download & install your keys into C2 initially (in the export wiz)
You apparently can export as HTML and upload apps like this but I couldn't get it working via this method