I'll start with this:
I am a HO guy. Was born and raised a by a Family of HO Railroaders. So I know next to nothing about O-Gauge. Meet my wife, and she says HO is too small for under the Christmas tree...I tend to agree with her, because my Trains belong on my layout, not on the floor under the Christmas tree. Fast forward to now. We're in the local hobby store, and she falls in love with their O-Gauge layout, and wants it for under the Christmas tree. Crap.
So I buy this on ebay: http://www.ebay.com/itm/POSTWA..._cvip=true&rt=nc
it came in, and it is BEAUTIFUL. Although, I am looking at it, and there is this switch at the top of the boiler, between the stack, and the bell, and I have Zero idea what it does...
Can someone point me in the right direction?