Bz2 compressed files
There are two (maybe more) ways to decompress bz2 archives.
The easiest way is to do this:
bzip2 -dc somefile.tar.bz2 | tar xvf -
If you have GNU tar from SGI Freeware or Nekoware you can do this:
gtar -xvjf file.tar.bz2
You may also have to make a symlink to differentiate it from the original tar (only necessary with SGI Freeware; Nekoware installs as gtar):
/usr/freeware/bin/tar to gtar