Holiday in snow - where and how

We were supposed to venture to the snow last year but things didn' t work right so we're having another bash this year. Money is tight so we're keeping it lean and can't afford all the glitz and glam that others have. Just want to give the kids a good time before they decide their too old to go on holidays with Mum and Dad anymore.

Going from the NW of WA so its a bit of a change for us. Aside from warmer clothes I'm interested in opinions about: -

Is it a bad plan to use the Bushranger camper trailer or will it be OK for a couple of days? We've got quality sleeping bags, portable heaters [blower type] and the like but I have no real idea of how cold cold is once your there. [if that makes sense]

We have to go on to Sydney and other places [relatives] so will only be in the snow fields for 2 or 3 days. Just long enough for the kids to have a bit of fun on snow tubes or toboggans or whatever and be able to say they saw snow. On looking through the snow pages it appears that Mt Selwyn might be a good place for newbies to the snow. Is this a good or bad choice. It seems that it might be a bit cheaper than some of the more 'on the snow fields' type places.

We look like doing the trip between 22.9 and 23.10.04 - Will there still be enough snow around in late September or have I left that too late?

I know 4 weeks is not long to do the trip but the Nullabor and either side we've done many times. We will be getting through there rapidly and intending to get to where we're going in a short time frame. Have a bit of a look on the way back depending on the time available.

Any thoughts please.

Dave