how to post Enhancements?

Hi
I have done some enhancements to win32diskimager.

- persistence of the last used directory (in the registry)
- GUI design (fix height of the form, small margins around progressbar and other controls, Form as parent of the Messageboxes brings the boxes over the form and not anywhere on the screen)
- Update of MD5 only after leaving the edit control (and not on every keypress...)

I was working on displaying drive labels beside the drive letters, but did no succeed to register volume changed event yet.

What is the best way to transmit the proposed changes?
I could send a patch file (at which address?)

thanks