Hello,
> > I'm looking for good multiple alignment editors for Windows (i.e., not
> > programs that carry out MA, but rather editors where you can change and
> > edit an existing MA). What programs do you use?
> >
You might want to try Genedoc:
http://www.psc.edu/biomed/genedoc/
or JalView (Java based editor - also works as an applet):
http://www2.ebi.ac.uk/~michele/jalview/
Best regards
Fred