The "File" menu in a web browser project has a sub-menu "New" named mnuNew. "New" also has a sub-menu that shows 2 options - "Window" named mnuNewWindow & "Message" named mnuNewMsg. Clicking "Window", as usual, opens a new instance of the browser & clicking "Message" opens the "New Message" window of the default mail client for the user to send a mail. Ctrl+N has been assigned as the shortcut key for "Window" & Ctrl+M has been assigned as the shortcut key for "Message" in the menu editor in the VB IDE (somewhat similar to the File--->New menu in IE).

Now what I find is if I press Ctrl+N on the keyboard, strangely my system's C:\ drive opens up (C:\ & not any other drive maybe because of the fact that the project resides in C:\) but there's no such problem when Ctrl+M is pressed on the keyboard.

I changed the shortcut key of "Window" to, say, Ctrl+Q. Now when I press Ctrl+Q on the keyboard, then a new browser window opens up. I even tried other shortcut combinations & all of them open a new browser window. The problem is only with Ctrl+N.

What's causing this problem? How do I overcome it?

Of course, I can assign any other shortcut to "Window" but since Ctrl+N has been the universally accepted key combination to open a new instance of an app, I did like to adhere to this combination.