[NTLUG:Discuss] Problem installing PCB

[terry]

I'm trying to get some electronics design programs onto my laptop and 
have successfully installed Xcircuit and Eagle but also wanted PCB.  In 
trying to install PCB I've ran into a snag.  I have RH7.3 but seem to be 
missing xmkmf and don't have imake either and don't quite know how to 
solve these deficiencies.  

Here is the part of the instructions [for PCB] that I'm stuck on:
===============================================
2. Run 'xmkmf -a' to create the Makefile or if you don't have it
         imake -DUseInstalled -I<X11 config directory>
         make Makefiles
         make includes
         make depend
   Don't care about warnings at this time.
=============================================
Results of trying to comply with above instructions:
============================================
$ xmkmf -a
bash: xmkmf: command not found
$ imake -DUseInstalled -I /etc/X11
bash: imake: command not found
============================================
Have downloaded 'setup_imake.jar' but don't have jar archiving tool to 
unpack it.  
I've yet to find jar.                              ..... Any help most 
appreciated.