Here is what I'd recommend - sync your desktop with Google, then sync Google calendar with your iPhone.

That is how I have it setup, as it means you are no longer required to do a wired sync.

Here is how to do it:

http://www.google.com/mobile/sync/

Step two is to sync Outlook with Google using their tool:

http://www.google.com/support/calend...y?answer=89955

There IS a sync app that does contacts too, but that may only be for Google Apps:

https://tools.google.com/dlpage/gappssync

Of course -this all requires that you have a Gmail account.

Once setup, it'll work flawlessly, and you'll have online access to your calendar and two way syncing between the iPhone and Outlook, without the need for iTunes.

Good luck!