Many module vendors do not use the NetBeans update
center at this point, or for various reasons (such
as purchase issues) do not supply modules using
their own update center.  I propose the following
infrastructure by which this could be done via a
browser:

1.  In browser, user clicks a button.  This button
is part of a hidden form, and initiates an http
POST to localhost:someport.  The IDE is listening
on this port.  Part of the data posted is the URL
to use to get the NBM.

2.  The IDE processes the POST, confirms that it
came from the local machine, and opens the Update
Center on the downloading page, and proceeds to
download the module.

3.  The rest of the update center process is as usual

NOTE:  This will not work on multi-user machines
(as the Open file server doesn't).  This should
not be a problem.

NOTE 2:  I think much of the code for this might
be able to be borrowed from OpenFile - this is
relatively trivial to implement.