1) It is NOT recommended to include a private email address in a public formum.
2) Yes, you can recieve your email on different computers, althoug I would recommend that you only download to ONE computer. For example My wife and myself have home desktops that are set to recieve email. However when on travel or vacation we use laptop or tablet to view emails.
If Both computers are se to recieve emails when you view, say from laptop away from home then you will NOT be able to view later from HOME. This depends on how client server is setup. If totaly cloud based - not a problem.
Xp had built in outlook express, Windows 7 DOES not come bundled with an email client, you need to install either:
1) uSoft Live email" or
2) Use a free 3rd party app such as thunderbird, or
3) If you have the more expensive versuin of uSoft office, you can use Outlook (NOT outlook express) and last but not least
4) My wife hates change, she was using Vista WinMail, so when she switched to Win 7 I ported over Vista Winmail. MORE involved than options 1 ->3.