Congrats on your 1st addon and welcome...Can I make a few suggestions? Posting the size and MD5 checksum of the addon is always good practice, it will show the user how much it will add to his ISO and the MD5 is to verify that he has downloaded the archive with no errors at all Second, if you want to make your addon compatible with the RVM Integrator you should add the name addon to the filename example rename: Firefox2.x.x.x.cab to Firefox2.x.x.x_addon.cab If the addon archive does not have the name addon in the filename it will not be visible to the integrator Again welcome to wincert, happy modding