%1 is not a valid Win32 application?

[Mark Space]

Update #2:

Renamed the extension yet again, this time to .py.  Mozilla seems to 
recognize this as a text file and displays it, but IIS still doesn't 
seem to catch the .py rule I added to the IIS Admin properties.  The 
script is still not being executed.

Win2K Pro, IIS 5.0.  SP4 and current on all updates.

Man I hope someone can help, I'm really lost here.  I think I'll try to 
add perl as a script just to see if I can get it to work.