Comment script

I use visual basic and ASP code in my pages.  What I want to do is comment out the code.  It would be great to have an extension that allows you to select some code and then put a comment character at the beginning of each line.  Thus, for example, it would change this:

set rs="dbconn".execute(query)
do until rs.eof

to this:

' set rs="dbconn".execute(query)
' do until rs.eof

The extension would allow you to reverse this so that the comments are taken away.  I've looked everywhere for such a useful extension, but can't find it.

Thanks,

Allen