(Lion installed) Can I use Boot Camp to install Snow Leopard? Is it legal?

Question

I have suddenly come into a dire need to run PowerPC apps.

My understand is that Lion will never support 32-but PPC code. It seems like the only solution, therefore, is to install Snow Leopard.

My MacBook Pro was the last to come bundled with the Snow Leopard DVDs. Is it possible to use those to install it on a new partition? And if so, can I use Boot Camp?

I know that Boot Camp supports Windows, and I have Windows 7 installed. But I don't know if it supports Snow Leopard. Also, it would be great to know if my Snow Leopard license covers this kind of usage.