Charts Line Types for Multiple Data Series not Printing Properly

Hi, I would appreciate any advice anyone has on this printing problem I am
having with data series line types. I have a bunch of charts that each have
5 data series on them (lines) Some are solid line types and others are either
dotted or dashed so you can differentiate when printed in black and white.
The problem is when I print they are all coming out as solid lines. The dots
and the dashes are not spaced enough apart so they come out as one solid
line. I have double check that I do in fact have the proper line type
selected. I am using Excel 2000

Thanks!!!