Hi guetner,
I might help if you NAME one of the rpm's that you cannot install.
I totally agree with Dan Brown that -nodeps doesn't help but most likely does damage.
Ex.: If you try to install "gallery" according to Dan's HowTo you will find that some rpm's are no longer to be found on the usual servers. Installing with -nodeps will not result in a working contrib since those parts are vital.
Asking here and naming the contrib might even give you direct leads to the missing parts

- by the author !
Regards
Reinhold