like this ker?
red LED (extra bright)
http://photos-066.friendster.com/e1/photos/66/05/7025066/1_224343454l.jpg
step 1..dismantle
http://photos-066.friendster.com/e1/photos/66/05/7025066/1_598897988l.jpg
http://photos-066.friendster.com/e1/photos/66/05/7025066/1_447718968l.jpg
Step 2..solder LED at PCB
http://photos-066.friendster.com/e1/photos/66/05/7025066/1_997454448l.jpg
Step 3..drill hole for LED
http://photos-066.friendster.com/e1/photos/66/05/7025066/1_991818198l.jpg
http://photos-066.friendster.com/e1/photos/66/05/7025066/1_509840970l.jpg
Step 4..last check and put back all part
http://photos-066.friendster.com/e1/photos/66/05/7025066/1_356961692l.jpg
http://photos-066.friendster.com/e1/photos/66/05/7025066/1_212466536l.jpg
Finally after wiring
http://photos-066.friendster.com/e1/photos/66/05/7025066/1_921939018l.jpg
http://photos-066.friendster.com/e1/photos/66/05/7025066/1_355116677l.jpg
take about 3hrs++ to finish it ;)