This is likely the link where I posted them:

[Link: remotecentral.com]

As to your second question I have no idea if you can import those hex codes into that remote. I'm guessing since its a) inexpensive and b) not PC programmable the answer is no. You will need to step up to at least an mx-850 or 780 or higher to be able to import pronto hex...unless you happen to have another means of taking pronto hex and then learning to the RF20.