From osx 10.5 to osx 10.6 using envelope dvds

Hi, i've 2 macbook pro, one is a late 2007 with oxs 10.5 Leopard the other is a Mid 2010 with Snow Leopard.

I would like to know if is possible upgrade the older one form 10.5 to 10.6 using the dvds that i found in the box of my latest Macbook Pro.

Thank you very mutch and sorry for my poor english. ;D

If the DVD you're referring to is the install disc that came with your 2010 MBP, then no it will not work. That disc is machine-specific. It will only work with the Mac it shipped with. You need a retail copy of SL to install it on the 2007 MBP (as long as it is an Intel Mac).