Creating a new file extension and then opening it

Hi,

I've been searching for this for hours. I want to create a file lets say

asdf.qxd. asdf.qxd is a text file and i want it to open in a program that I

have made. I don't care about how to get it to open in the program (for

instance I can just tell windows to use my program to open it by default)

but when I need to know is how to pass the file into the program (by

command line arguments or some other way).

Any help would be greatly appreciated.

Thanks

[519 byte] By [n3w813a] at [2007-11-27 10:17:53]