1) Microsoft Live mail, simulater to your gmail, or a google account.http://windows.microsoft.com/en-US/windows-live/essentials-other-programs2)
Expensive Microsoft office version that has outlook (NOT OUTLOOK express) bundled.
3) 3rd partiy program such as Thunderbird, or just google 'email client for Win 7"
4) Difficault, but can be done, port windows Vista winmail over to win 7. Reaquires knowing someone who still has vista installed.