[Pythonmac-SIG] How to create a desktop alias to run a python file?

[Stani's Python Editor]

Hi,
This is probably very easy, but I don't find how to do it. I want to 
execute this command if an user clicks on the icon of the alias on the 
desktop:

/usr/bin/pythonw path/gui.pyw

Thanks for any tips,
Stani