Using Windows Mail, but outlook express comes up in other applications??

I have always used Windows mail and never configured Outlook express on my laptop. But for other applications on the computer, when I click email, Outlook express comes up as the email service, and then cant send the email as is not configured.

For example, I am trying to send a email newsletter in MS publisher. I have created the newsletter, but when I send email as page, it brings up the Outlook express email box, which then tells me to configure a new user.
I tried to go all through that process, but ended up nowhere.

If I am reading an email in my inbox in windows MAil program and click on an email address within the body to reply, outlook express comes up and tries to get me to activate it?

I went into Default programs and set windows mail as the default application for all its applications, but has made no difference.

Do I have to change everything to Outlook express to be able to use everything correctly?

Help appreciated.

Outlook must have come preinstalled. Go to control panel, progarms and look for outlook. If there uninstall.
If not there
Go to search,
type outlook
Then right click properties and find the location.

It is not configured yet, It came with Microsoft office when I installed it. I clicked search and it came up but am not sure how to find the location, i right clicked properties
and it said
C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Microsoft Office
WHat do I do now? Am I better to configure outlook? IS it a better mail program than windows? Is that why you have to pay for it instead of it being free? IS that what Office uses?

OUtlook is not OutlookExpress. If you have outlookExpress, it is a free mail client.
If you intall Windows Live Mail 2011, it should just replace Outlook Express. If you DO Mean Outlook, that is something entirely different and it does cost, so I guess in some ways better than Windows Mail.