Kcam3 cnc software geared toward PCB
drilling and sign engraving http://kellyware.com/kcam/kcam.html.
X-Y-Z Ballscrews for Shoptask
Machine made by Chuck McGhee http://www.candgresearch.domainvalet.com
If you live in Australia try http://www.cncteknix.com/ for your CNC needs.
This is a another G code converter program
that may be of interest. It has several other neat programs to complete your cnc library
of programs. http://members.aol.com/andrewc119/index.htm
Mach2/3/4 software- http://artofcnc.ca
Sieg X1,X2,X3 hardware retrofits, Motors mounts
and ballscrews http://www.cncfusion.com/smallmill1.html