I'm still researching but here is my issue.
I'm trying to create application that would hookup to my browser so when I click special link ( in my own web app ) it will execute local application, like notepad or open local directory ( new window on my desktop, the same one where I clicked on the link ). Basically its a catalog of projects on web, each project have its own folder in PC, so when I click on project link in web I want to have it open local folder with the project as new window.
I might not be making much sense

Thanks.