Okay I am asking this a possible question and not a legal question. I have an Intel iMac running Tiger and an Intel MBP running leopard. I was told by a friend that I could use my Leopard restore disks to update the iMac so they both were running leopard. I am unsure if this will actually work since they two different computers running two different OSs. The reason I am curious about this because I catching the SL bug and want to tinker with it a little bit once it come out and I do not want to buy the Box set since I already purchased iLife 09 for my MBP and I use Microsoft Office for Mac plus it seems like it will be around $170. I do not want to update my MBP because it is what I user for school and work along with being the thing I take with me where every I go. Please advise me. I just want to know if it is possible and if anyone has done it.