well, what kinda grid are you talking about, just your basic
straight lines up and down, if so there is no real way to do
it, you just gotta draw one line, and then the best thing to
do is offset the distance as many times as you need then its
the same in the other direction... For a 3d one to go up and
down over contours, I would suggest a Mesh, the command line
is '3dmesh' its kinda hard to get used to it but it does the job.
If this doesnt help then tell me exactly what is it you want
to draw. And what version of CAD you are using.
And by the way have you considered AcadMAP. Pretty useful!!!
Jay~
If its broken, just leave it and hope someone else fixs it!
~KeyTech