Autocad 04 Solid White Blocks Issue

I've made some window elevation blocks with a solid white (color
255,255,255) hatch backing, so when inserted into a drawing anything
behind my window block would not be seen or plotted. (ie. a window
inserted on an elevation with a brick facade. However I seem to run
into a problem when I plot the model space to a PLT file. All my
window blocks plotted black when I view the resulting PLT file. The
pen style I'm using is a modified monochrome.stb. I've attached the
following image of the modifications I made to the pen style --->>>
http://img401.imageshack.us/img401/1167/snag0168ag6.png.. Any help
would be appreciated.

 

I think I know whats happening. I'm using a Xerox HDI 2004 Print
Driver http://www.support.xerox.com/go/results.asp?Xtype=download&prodID=xes_6030&Xlang=en_US&Xcntry=USA,
which according the the release notes, the feature is not supported/or
its a know issue. Guess i'll just have to update the driver and pray
for the best.