The outlook warning is a security feature but one you can work around,
I would suggest at first pass the use of a DLL in outlook namely the mapilab add-in. I use this routinely and it is free for both private and commercial usage, (or was the last time I checked). Basically the first time you do something in code it pops up a box asking if you want to allow the action and if you select 'always do this' then it is transparent from that point. i.e. install it, do the action and it will
http://www.mapilab.com/outlook/securityChris