Outlook 2007 account setup problem

[DOH!]

Okay, here goes, please forgive my ignorance.

At our company we have 2 ways to get email. We have an inter-office email
system that uses (I believe) an mapped network drive (named: "M:\wgpo0000").
I also use a 'plain' pop3 account for our "outside" email. I just received a
new computer and installed MSOffice2007 and I cannot get the inter-office
email to work.

I have gone to other computers in our building that are still running
Outlook 2000 and I try to set up my OL2007 with the same settings---for what
I believe should be a MS Exchange server (sorry, ignorance showing).

I set up the pop3 account just fine and can get 'outside' email, but when I
try to set up the second inter-office mail exchange server name, OL2007 says
it can't find the server, etc... I know my username is 'tchilds' and that
for the server name I am using M:\wgpo0000\ just like it appears in the older
Outlook programs on other computers in my office.

I'm stumped...HELP!
Thanks in advance.

 

[DOH!]

Sorry...I need to add an update.
What I am actually looking for in OL2007 is how to set up a Microsoft Mail
account. Like I wrote below our inter-office email uses a server to host all
sent and received emails.
I didn't notice this before...how do you go about setting this up?

ALSO...I forgot to mention that before I received my new computer I had
upgraded from OL2003 to OL2007 and all the accounts, settings and address
books transferred over. However, now that I am starting from a clean
install...I don't know how to set up this again.
Thanks!