Twin system partitons with Intel iMac

Hi all,
I have several older 32bit Apps that don't work anymore in Lion. Can I reconfigure my Intel iMac into 2 partitions, one for Snow Leopard, the other for Lion, will this solve the problem - what is against this idea?

Yes, that works if you have a Mac OS X 10.6 DVD capable of starting the computer up. If you have Boot Camp set up on that drive, this may disable it. You also won't be able to create a Boot Camp partition on the drive afterwards.
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