A question on scale. a space in D&D is of course 5'x5' as everyone knows. I know you use something like 360 dpi, but how large are the squares? 80x80 pixels? 72x72? just want to know if they will be compatible with some of the other stuff I have?

The models are set at a maximum of 200 DPI as this seems to be the highest "visible" resolution you can attain on cardstock paper. The grid squares are 1 inch by 1 inch and at 200 DPI that translates to about 205 by 205 pixels from the outside edge of the border.

I hope this is compatible with your other material. If not, you'll just have to wait until I flood the market with everything you'll ever need  ;)

D.