drawing grids

hello can anyone tell me how to draw grids?? it's like this: Imagine that I say that I want the grid to be 5X6, it will compute the distbetween the limits and then draw them. if I want a 6X10, it will do the same. thanks __________________________________________________ Do You Yahoo!? Check out Yahoo! Shopping and Yahoo! Auctions for all of your unique holiday gifts! Buy at http://shopping.yahoo.com or bid at http://auctions.yahoo.com