| Right, that's the problem.  it's not as simple as y=mx+b.  But that's what the mapping program supposedly needs.  The mapping program could also handle something along the lines of y= mx + nx+ ox...+b. 
				__________________"Sometimes I have to remember that things are brought to me for a reason, either for my own lessons or for the benefit of others." Cynthetiq
 
 "violence is no more or less real than non-violence." roachboy
 |