the LM317 circuit driver

hello im going to use the LM317 circuit driver for my diode
am i right in thinking that this driver requires 2 cr123 batteries
if so what torch takes 2 of these batteries can anyone help please

Look here:
http://www.laserpointerforums.com/forums/YaBB.pl?num=1186966870
You are beginning a great adverture...take some time and do a lot of reading on this thread before you begin...
Jay