I see SeaVixen is probably busy with a reply, so I'll concentrate on the Outlook Express question.
The only way to run Outlook Express is using XP Mode in either Windows 7 Professional or Windows 7 Ultimate:
How to use OE in Windows 7
If you use Windows 7 Home Premium, then you could install XP as a virtual machine and then run Outlook Express in that.
My recommendation would be to shift from Outlook Express and go with Thunderbird.