The following shows the setup screens for setting up accounts in MS Outlook (Not Outlook Express)

To begin, click on: "Tools", then "Services", then "Add" and select "Internet E-Mail Account".
You will be at a setup screen with multiple "tabs", complete the information as follows for the given tabs. You will not have to worry about any tabs or fields not addressed. Leave them at the defaulted values (even blanks).

GENERAL
Name for servers - Call this any friendly name you want to give this account.
Name - Type in the name you would like to appear in the "From" field when someone receives an email from you.
Email Address - type in the email address you would like to use.

SERVERS
SMTP Server: your-domain.com
POP3 Server: your-domain.com
Account name: username (either your-domain without the .com extension or the user name you created in the WebControl Panel. The web control panel is at www.your-domain.com/cgi-bin/plusmail )

ADVANCED
Leave copies on server: Check this box ONLY if you plan to check the same email account from multiple computers. If you do decide to leave a copy on the server so you can pick the emails up from another location, be sure to check the box that indicates the number of days to delete after. This should be the max. length of time between checking the mail on one PC and checking it on another PC. But you won't want this to be too long of a period, or you may risk overfilling the mailbox allotment which will disable the email account. Depoending on your email volume, 3-5 days is generally sufficient for most people.