Hi there...the link at the bottom is the Hulda Clark Flush - it is the most popular and is a good one to begin with - then you branch out and experiment as you see fit.
Another girl with IBS has been taking Bentonite & psyllium drinks and has had good results - check out the Bowel Cleanse Forum for Blackberry's posts. Here is a link about b&p's: //www.curezone.org/forums/m.asp?f=153&i=1061