Q: How to convert the schematic and layout files from DSN and BRD format to .SchDoc and .PcbDoc format?
Answer: Cypress provides the schematic and layout files of all the Development kits on the respective web pages in .DSN and .BRD format (binary format). These files can be converted into .SchDoc and .PcbDoc format (ASCII format) by using the Altium Designer’s Import Wizard in Altium Designer software.
http://wiki.altium.com/display/ADOH/Moving+to+Altium+Designer+From+OrCAD provides step wise information on how to convert OrCad Design files into Altium files.