This video shows you how to administer insulin to  your pet.  You will also learn how to monitor the glucose and ketones in the urine.

http://www.youtube.com/watch?v=8U-vivkw5eE  

This video was produced by Cornell University's Feline Health Center and is an excellent resource for treating and monitoring feline diabetes.

http://partnersah.vet.cornell.edu/pet/fhc/diabetes