So many question marks (????) make us think that you are upset.Yes. You can install a program by placing its file in a "Classic" folder on the Pre.
I'm not sure what you mean, exactly. If you want to know the format of the installation files, they apparently will be the same pdb and prc files we would currently use. Instead of hotsyncing those files, we would place them in a folder in the usb mass storage area of the Pre.