Hey,
I'm a new freelancer but I'm an experienced developer, to prove that I'm capable of finishing this project i have made a demo.
Here is a demo plugin: [login to view URL]
Plugin will create a hyperlink and add html code for opening links in a new window also if you copied a link before, it will fill the url automatically, plugin will add hello world text to any link which i will remove in a finished product. To install the plugin it should be copied to: C:\Program Files (x86)\Windows Live\Writer\Plugins (default location).
I'm open to customization based on your needs, my delivery estimate is based on minimal changes to the demo version.
Regards,
Ognjen Jarić