hi guys i've got itunes on my old xp computer and on my new xp64 computer. my itunes library is on a separate portable hard drive. i can plug my ipod Touch into any of the 2 computers and itunes recognises it instantly. but, i can only get my old computer to recognise my new ipad. it just isn't registering on my new pc. must i do something in it's itunes set up to rectify this? also, my ipad only seems to charge when i plug it into the wall. the usb lead that comes with it doesn't charge the device when plugged into a pc. is this correct?