sh -c processes???

[Scott Micciche]

I have a question surrounding blackbox's "sh -c" processes when
launching from the menu.  I'm not familiar with writing window managers
and was wondering why these processes were necessary.  I notice other
window managers do not use them (fvwm, icewm, windowmaker, etc).  Is
there some way to eliminate these processes from occurring?  Thanks in
advance.
-- 
Scott --- 

Kirk to Enterprise -- beam down yeoman Rand and a six-pack.
                -- Kirk, "The Corbomite Maneuver", stardate 1514.0