Yes , it is a DIY job. I did it a while back. There is a updated kit, less than $5 , if I remember correctly. It is not that hard but, it is time consuming, Especially for a first timer, even with the manuals. The new kit works great. Get the parts and possibly get the manuals. By doing this job yourself, consider the CD's paid for...
If you decide NOT to buy the manuals I am sure somebody will help you with details, I will try to look for the information in the mean time.