Here's a link to an email from Shelley of the "Ask Shelley" forum regarding cleansing/enemas. You might want to check out her forum for additional details on cleansing and enemas. She really has a wealth of information there and you can also post questions.
I suffered from cystic Acne for many years and hated it so I know how you feel. The cleansing programs have helped me emensely and here's one other thing you might consider: www.no-acne.com advertises a facial wash that is cheap, comes in a large container and carries a lifetime money back guarantee including the cost of shipping. It's not a substitute for cleansing by any means but it does help in combination...in fact, it has helped me a lot in the past 5 months.
Good luck with your cleansing program.....take it one step and a time and find what works best for you.