Custom Windows Service Issue

[chadau]

I developed a custom windows service that needs to access the outlook object to resolve email addresses. Worked fine until I installed it on a Windows 2003 server. Now it locks up during the resolve process because of a security measure on Windows 2003 server. So I ran the resolve process in a standard windows app and saw that a dialog screen pops up prompting that "a program is trying to access an email address". It thinks the program is malicious. I changed a registry setting per Microsoft instructions to allow trusted use of outlook and it worked for the standard windows app but not for the windows service. Can anyone give me any pointers on getting around this issue? Thanks in advance.