I have three AutoCAD/OS configurations: 1. Win2000 ACAD 2002 2. WinXP ACAD 2002 3. WinXP ACAD 2004 The color plots to my DJ1055CM come out nearly identical for configs 1 and 2 despite the different OS (The diffferences are tiny and not worth griping about). However the color output from config 3 is very noticeably different from configs 1 and 2 - colors are generally darker and solid colors have a sort of greenish/bluish dotted mask on top of them. As you can see, configs 1 and 2 use the same vesion of Acad with different OS and config 2 and 3 share the same OS (XP) but are different versions of Acad. I have updated the driver (from 4.63 to 4.66) and matched all the printer property settings between my Win2000 and XP machines. None of this has made a difference with the color output in Acad 2004 on XP. BTW, I am using CTB's when plotting, not STB. Has anyone experienced similar behavior? Thanks, Mark Sanchez