Mo the Lotus site has instructions on the booster I think? I'm guessing you'd fold it different for a girl, so that it's most absorbent in the middle, for my boy I fold it so more bulk is at the front, since that's where his appendage is.

Having a pretty rubbish day today, I'm in trouble with dh about the house, and he's right, but didn't choose a very nice way to say it. I hate when I can't argue back cos he's right. Better go do some washing or something...be back when I'm more cheery anyway. :P