What version of Outlook are you trying to use? If it's 98+ with the Outlook security patch applied, then programmatic access to Outlook is disabled. There's a lot of stuff on MSDN about how to get around this, but unless you have an Exchange environment and a helpful Exchange admin, you are still going to have Outlook asking you whether to allow access to email every time your script (or any other application) runs.
I'll dig out a couple of links and post them here later today, but basically the fix was to create a new public folder in the Exchange organisation, download a custom form from M$, make a couple of reg hacks on the machines that would run the script, or application, or whatever, and then Robert's your father's brother. Trouble is, you'll need a lot of rights on your Exchange box and your client machines to do it.
Back later with links...
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Breaker