There is no such thing as Outlook Express 7
. The final version was Outlook Express 6
.Outlook Express 6
was included with Windows XP and is not available as a separate download.
It will not work on Windows 7 anyway.
If you want a free email client to install on Windows 7, try Mozilla Thunderbird
If you would rather have Microsoft Office Outlook
, you have to buy it:http://www.amazon.co.uk/Microsoft-Office-Outlook-2007-PC/dp/B000HCXKLC