abt installations

greetings all!

we have a volume filter driver which we want to attach to both real
and shadow volume devices. however since the class guids are
different, i am a bit concerned as to how to attach to both classes.

can some one help me with pointers on how this can be done?
do i need to infs, one for each class, or can i use coinstallers and/
or setup api to help this?

thanks

amit.