how do i switch my praktica dpix5200 0n?!!!!?

Hi!!Bought a praktica for my daughter for xmas, but it wont turn on!i know it sounds like a stupid question, but which way do the batteries go in? Ive tried two different lots of batteries, every which way round, but cant get it to switch on.Cant send it back because havent saved any packaging or anything(it all got thrown away on xmas day amongst the madness!!) Please help?