Take a look in the help file - it talks about how script maps work.
Basically you can simply set up a scriptmap to .wc, then change all your wc.dll links to wc.wc. Everything should still work as it did before then.
But ideally you'll want to take advantage of the way scriptmaps work which is it maps to a Process class and the script name maps the method (ie. Helloworld.wwd where wwd routes to the process class (wwdemo in this case)).
+++ Rick ---