havent read the full thread, but this is my understanding of creatine. correct me if im wrong.
1) Muscles use ATP as energy. (adenosine tri(3) phosphate)
2) To use the ATP as energy it is phosphorylated (process that removes one of the 3 phosphate groups)
3) ADP (adensine di(2) phosphate) is the left over macromolecule after ATP is phosphorylated/used as energy.
4) ADP then undergoes another process sort of like recycling in order to gain back a phosphate group, once again becoming ATP, therefore being once again readily available energy for muscles to use.
5) As a supplement, when ingested, creatine is converted by the body into creatine PHOSPHATE. The purpose of creatine is to make easily available phosphate groups to help increase the speed of recycling ADP back to ATP. More ATP = more energy, more energy = more reps, more reps = more muscle building.
I know this is pathetic in scientific detail, but i wanted to scrap the jargon and keep it simple. Correct me if i'm wrong, cause i might be.