John Jenkinal - 2009-01-17

I am looking for a complete circuit simulation and circuit layout simulation.  Board houses tell me they want the layout in the one of two Gerber Formats - RS274D and RS274X.  I want to use this tool to provide the file to the board house.

Currently I have a woking circuit model in Pspice.  Is there a formal process for translating a cirucit model to a layout model or does this need to be done manually.  Is there a sourceforge tool that would make this translation easier?