[Zope] - Zope Install Linux (Untar)

I've successfully installed ZOPE on windows Great! Now I want to install on my RedHat 5.2 Linux box. But RH didn't come with 'untar' It does have /bin/tar but not untar. Can some one attach/mail me a copy at rocon@pivot.net? Or am I missing something, perhaps an alternative to untar? A consideration: will ZOPE be distributed in the RPM format in the future? Thank you. -bobo connor