Where's my Vanishing Point grid?

Good morning, Creative Cattle! So, it's my first time using Vanishing Point, so be gentle. But I think I'm doing everything right. Anyhow, in PS CS2 9.0.2, I have set my four points on a surface, but the famous Vanishing Point grid does not display. My four corners are there, and they're all connected, making a nice parallelogram. But there's no grid depicting my surface in perspective. Are there any "view" settings I'm missing? I'm able to use the grid size slider, but obviously to no effect since there's no grid to resize. And The "show edges" box is checked. Thanks for any help!