MI Still cannot print transparent images

[kiva consullting]

I have tried just about everything.  I have unchecked internal raster handling in MI, processed my print document in the computer, and combinations of these items.  My 750C plus will now print a black and white image of the DRG when internal handling is unchecked AND processing is in done in the computer (Advanced options in HPGL).  I have contacted MapInfo and Hp - still nothing.  If anyone has any other suggestions - I'm all ears.    In case you did not see my earlier note - I trimmed the edges of some DRG's and have made white transparent in order to build a composite TOPO background - it worked great, but I cannot print to my plotter.     Thanks again,   Shawn Vickers Kiva Consulting [EMAIL PROTECTED]