Alex here is a couple of videos that may bring some insight into all this multi dimensional and multi universe conjecture.
It also brings some insight into what infinity is and infinities inside infinities.
http://www.youtube.com/watch?v=8Q_GQ...layer_embedded#!
http://www.youtube.com/user/10thdim?feature=relchannel
Watch them in order. Remember it is only slickly produced conjecture.
I forgot to say that reality is far more complicated!
Bert