pretty windows installer for py scripts

[Adriaan Renting]

The elegant way to do installs on Windows would be by creating an MSI. Microsoft provides (IIRC) a simple tool to create those (Orca), that's free. Without the Installshield or Wise tools I think it would take quite some effort though, because you need to understand all the details of how msi tables work. You might be able to get the idea by using orca to look at other msi installs, and figure out how they do things.
MSI itself isn't very difficult, but it'll take some time to understand it. If you do use it, do not foget to define uninstall actions.
The izfree tools and tutorials on sourceforge might do the trick for you:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/msi/setup/windows_installer_development_tools.asp
http://izfree.sourceforge.net/