"Dave Balderstone" wrote in message
news:090120101232560780%dave@N_O_T_T_H_I_Sbalderst one.ca...

www.garagewoodworks.com

This is relatively inexpensive and much simpler than using a router like
Norm uses. I have been using this jig for about 12 years. comes with a
special Vix type bit that IIRC uses a brad point style bit. Can be used
before or after assembly in many cases.
http://www.rockler.com/product.cfm?p...er=shelf%20jig

See also http://www.plansnow.com/100108download.html

the beauty to the Rockler jig is that the bit is self centering and does
not/has not damaged the holes in 12 years od use.