screwed up rpm - how do I recover

[sean darcy]

Installed rpm-4.3.2-0.10, which screwed everything up. I installed the rpm 
4.0.4 libraries!

Now, how do I fix it. rpm obviously doesn't work. I have the rpm-4.3.2-0.4 
rpms, but I can't install them.

rpm2cpio doesn't work, so I can't install using cpio.

Is the a tool to extract rpm files that doesn't depend on rpm being 
installed?

Where are the plain source files, i.e. rpm-4.3.2.tar.bz2?

sean