Homebrew PCBs

Greetings:
I have a question about pcb software: Traditionally when I make circuit boards I use a software package from ivex called winboard pcb. The only problem with this software package is that I am unable to generate negatives once I have the positive made. The process I use to make circuit boards is the 'wet negative process'. I have gotten by in the past by printing the image on a white piece of 8.5*11 scanning it in and in photoshop I invert the image at print time on a 3m deskjet transparency. I find this method to be a hassle and I loose quite a bit of resolution going through all those steps. I guess I am looking for another 'WHAT YOU SEE IS WHAT YOU GET' program that can turn positives into negatives or maybe someone can correct me and show me where the invert command i can't seem to see in winboard pcb is. 
Thanks in advance!
Randy Knutson



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