Hello Linkinmylog,
There is not an option in Outlook to do it, however, I have read in many places that there are programs that allow you to minimize any program to the system tray rather than the taskbar.
I have not tested any program myself, but I know there are programs to do it. I tried searching for one on
Free Software Downloads and Software Reviews - Download.com but didn't find any with reviews, so I can't say I would recommend either of the ones I found.
If you do some hunting on Google, I'm sure you can find a good, free, spyware free program that lets you do that.
Hope that helps!
