Buy or make something like this.
http://www.amazon.co.uk/Tacx-Antares-Roller-Support/dp/B002K93V96
Its exactly what I use with my Classic.
At first I just bolted on a couple of wooden battons as support 'skis' and then I replaced these with a couple of unused car roof rack bars with some rivnuts fitted to secure it altogether.
I then ran a roof bar strap from the trainer cross tube to the cross bar of the support to make sure everything moves together as my bike and turbo are a permenant set up in my man cave (back room) in front of my wall mounted 40 inch Sony flat screen, now that we have just bought a 50 inch 4k LG for the front room, attached to quad core PC specifcally built for turbo training.