B4wbem is available via cvs and as tarballs.
For the packages to work you need a couple of non standard perl modules.
Right now you should figure out yourself, which modules are needed, but
I will come up with a bundle of the modules sometime.
Furthermore, you need a properly installed nsgmls. It's
included in either of the RPMs "jade" (RedHat) or "sp" (Debian and SuSE).
Goto download page
Please read the READMEs in both packages, they contain important
configuration and installation hints!
Goto cvs page
To check out the sources, you need to have CVS installed on your system.
If you are unfamiliar with CVS have a look at the
CVS web site.