Shortcut/"Open with" Sublime Text, in a new Sublime window

This works for me (and is more comfortable for me than the Open with submenu):

1. Open regedit.exe
2. navigate to HKEY_CLASSES_ROOT\*\shell
   To apply this only to certain file types replace the * with the appropiate extension
3. Add key "Open With sublime in new window"
4. Inside this, add new key "command"
5. Inside "command" set the (Default) string to:
   C:\Program Files\Sublime Text 2\sublime_text.exe -n "%1"

(basically copy the original keys, adding the -n)

6. Optional:
   Inside the key "Open With sublime in new window", add a string named Icon:
   C:\Program Files\Sublime Text 2\sublime_text.exe,0
   This will add an the Sublime Text icon to the left of the command on the right-click menu.

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To add the entries to the context menu for folders, add the same entries in:

• HKEY_CLASSES_ROOT\Folder\shell
  For the context menu when you click on a folder icon
• HKEY_CLASSES_ROOT\Directory\Background\shell
  For the context menu when you click on the background of a folder
  For this entry you must replace "%1" with "%V" (Thanks Filip)