IPhone :: How To Sync Old Devices To New PC

My wife and I both have iphones. Our old laptop died. We have a new windows 7 laptop. I have downloaded itunes. I have two questions:
1) How do I sync and back up our iPhones on the new laptop without losing any data stored on the phone? and
2) I used to use windows contacts to sync contacts with itunes. I now have Outlook and would prefer to use that program for my contacts.Can I set this up with two different contact lists (i.e. one for me and one for my wife) that the phones will sync with? and obviously, how do I then sync the phones to those new lists?

Info:
iPhone 4, Windows 7