insert a file into a binary rpm how

Hi, Group,

I am asking this question because I would like to insert several pre-prepared files into a binary rpm, and I know this is possible for the debian packages (since .deb can be manipulated with standard unix facilities such as ar, tar, gzip). Also I know how to extract a specified file within a rpm using rpm2pico and pico. Just the other way around I don't know.

Of course I know how to do it if I have the source rpm or the raw source, but unfortunately I don't.

I can also manually put files there but it would be nice that they were covered by the rpm package manager, thereby it would be easier to install-uninstall or port to other machines.

Ideally could someone tell-hint-suggest me how I append the added files into the rpm?

If this isn't even possible, can someone at least tell me how I can edit the rpm database (in Berkeley DB format?) so that (1) the new manually added file would appear belonging to the rpm and (2) a "rpm -e" will erase the files as well?

Many thanks,

KB --