I write macros for these from time to time. To get them to run I lower the security level, typically to medium, and respond accordingly to the application prompt.
I've Google'd and seen various ways of getting the macro 'signed' such that it'll be accepted. Any experience, good or bad, of ways or doing this?
In fact I've just tried the 2007 process on 2003 using Office Tools Digital Certificate for VBA projects - I've just found that is in fact the SelfCert.exe application..
It seems to be working fine in the one Outlook macro I have. I've been able to set the security level back up to High which is my preference.