Those are all server-wide settings and are not allowed in a VHost configuration, so I don't think it will work for the original poster.
It looks like the original poster is on the right path with mod_cband, tho. It would have to be done inside a module. If it works out for you, then please post back with your results -- I think it would still be useful for other admins.
Fortunately, I have not run into this problem with a single domain.
Originally posted by wagnerch
Those are all server-wide settings and are not allowed in a VHost configuration, so I don't think it will work for the original poster.