How to install Snow Leopard/Logic 9 on same drive as Tiger/Logic 7

Well I guess my subject said it all. I wanna keep Tiger & Logic 7 but install Snow Leopard & Logic 9 on the same drive. When installing Snow Leopard will it give me the option to partition the hard drive? Any pros & cons to doing this? Some detailed help would be great. Thanks.

Basically from the *disk utility* you'll have to create a new partition big enough to accommodate the new system. As in the picture, select the disk you want, then shrink the size of the disk within the volume scheme graphic ( in this pic I've halved my system volume ) then hit the plus button to create a new partition and when you have it the way you want hit apply and follow the instructions. ( the highlighted blue area shows the existing data on the disk. )
Then you can install the additional system and Logic 9 on that partition.

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    ^__^

    1. The data won't be erased unless a problem occurs.
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    (92634)

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    .How to install snow leopard

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