1. Make a bootable backup of your current system. Restoring a backup is the only way to "uninstall" a newer system version.
2. Yes, as long as it's Office 2008 or 2011 it will work with Lion.
3. I would suggest upgrading to the maximum RAM for your model which is 6 GBs.
Maximum Memory 6.0 GB (Actual) 4.0 GB (Apple) Memory Slots 2 - 200-pin PC2-5300 (667MHz) DDR2 SO-DIMM
I am sorry for my ignorance Kappy, but a "bootable backup", how is that different from a regular backup? I usually backup my computer every two months. Should that be ok?
Should I install Lion and if I see that it goes slow buy more RAM or should I buy the RAM before because it is going to create problem even with the install?
Should I go the the Apple store and it is easy to do it by myself?
I already have Lion OS ready, but I don't want to do anything until I have all the information.
Thank you very much.
A bootable backup is essentially any disk that contains an installation of OS X capable of booting your computer. I generally recommend cloning your startup drive:
Clone using Restore Option of Disk Utility
1. Open Disk Utility in the Utilities folder.
2. Select the destination volume from the left side list.
3. Click on the Restore tab in the DU main window.
4. Select the destination volume from the left side list and drag
it to the Destination entry field.
5. Select the source volume from the left side list and drag it to
the Source entry field.
6. Double-check you got it right, then click on the Restore button.
Destination means the external backup drive. Source means the internal startup drive.