Not really a win Q
http://www.outlook-tips.net/howto/commandlines.htm
Your first shortcut is one that has been created
The second (mail Setup) is the default created during installation of
Office/Outlook

First off, if you haven't done so already, you might want to post this question
in the Outlook newsgroup.

That said, the /recycle switch in the first shortcut starts Outlook or makes an
existing Outlook window active. If that switch wasn't there and you had Outlook
running, double clicking the shortcut would open another instance of Outlook.

Outlook Command Line Switches
http://office.microsoft.com/en-us/outlook/HP010031101033.aspx

The second shortcut is created when Outlook is installed and usually is placed
on your Desktop. It will also show up at the top of the XP style Start menu if
Outlook is your default email program. Process Explorer shows that selecting
Properties from the context menu for that shortcut launches this command.

"rundll32.exe" shell32.dll,Control_RunDLL
"C:\PROGRA~1\MICROS~2\Office12\MLCFG32.CPL"

Basically, what it does is launch the Mail applet in Control Panel.

Good luck

Nepatsfan

The date and time was 5/23/2008 6:47 AM, and on a whim, AAaron123
pounded out on the keyboard:

Hi Aaron,

One is not a shortcut, but the program icon.  MS does that with certain
icons, like IE too.  The other is a shortcut, denoted by the square box
and arrow (unless you have shortcuts modified by using TweakUI or some
other utility).

Here is what /recycle does:

Starts Outlook using an existing Outlook window, if one exists. Can be
used in combination with /explorer or /folder. The Outlook shortcut in
the Quick Launch bar uses the /recycle switch.

See all the options here:
http://www.outlook-tips.net/howto/commandlines.htm