Yep...bigger gears, lower cadence first. And, make sure there is enough tension on the tire so that it doesn't slip.

The first year on the trainer, I could handle about 15 seconds at a very low cadence. I'm not coordinated. Now I can actually do the 3 minute standing interval in the Recovery DVD if I pace myself.

That said, I refuse to stand if the cadence is over 90--my knees just down't like it. As Pedal said, sometimes I just gear up to stand; sometimes I just leave the gear and kick up the cadence 10-15RPM.