I don't know what you are looking for from the mod, but what I did a couple of years ago was to purchase a Niteize 3 led drop in for around five dollars. This is my favorite light for runs to the bathroom and kitchen during the night. I put a water bottle cap over the head to act as a diffuser, which works great! Did I mention that the run time is looooong!
if you do a search on here before you ask you will find many many discussions about what is good and what is not. here is a list of many many m*g mods for you to look at.
sorry to sound rude but just about every day someone else asks the same question. just look around and you will find what you want.
To Davidt, thank you i think i will be doing this mod as soon as i can get the parts..... where do i find these parts?
To Climberkid, we live in a society of instant gratification, (well most of us do) and i am definetly a fan of, instant gratification. So instead of wasting time searching through page after page i would just rather repost the question. that way i can go on about what im supposed to be doing, (working ) and come back latter and check to see what i have gotten. Thank you for your opinion but i choose to disregard it. Wow that was really bitchy of me............ oh well