how long should you use creatine.. to see noticable difference in terms of size and more importantly strength?
Check the supplements thread as I can't remember how long I used it for.
I think I loaded 15grams 5/5/5 for 5/6 days then just had 5grams pwo for about 5-6 weeks.
There's people that will tell you not to load, not to cycle, some people that are constantly on it etc.
If you're eating plenty of read meat it's not really neccesary anyway. Sorry I can't be of more help but this has been asked thousands of times all over the net and has been discussed in the supplements thread.