I just tried to use Time Machine wanted to make a backup and maybe in near future prob change my harddrive and back it up...Anyways would it work if I was going to get a new harddrive 500gb can I use a time machine backup to get my computer the way it is now. Also when I launch Time Machine and turn the switch on I can't click use for back. All I see is Set Up Time Capsule / Cancel and next to cancel is use for backup which is not functional....?? Why is that is that normal do I have to do something else...Any 3rd party application I can use which is better that Time Machine or close to it...