Do the install rpms install the JRE/JDK stuff as well? Looking over some other threads, it looks like the java stuff is fairly essential ... this might present a problem vis-a-vis a FreeBSD install (since
installing Java on FreeBSD is not the easiest thing in the world in x86 and if not actually impossible on FreeBSD/SPARC, very very close to it.)
If you do get a solaris pkg built, it's quite likely the sunfreeware.com and blastwave.org folks will be happy to host the packages.