Query regarding Outlook Add-in and User's Security Groups

[Piyush]

Hi All,

I am developing add-in using C# 2.0 and VSTO for MS Outlook 2003 which is
configured for Exchange Server 2003 SP1.

Is there is any way to access security group(s) of current user from the
add-in code?

I thought of executing Active Directory query on my exchange server in
add-in but got stuck by unavailability of Exchange Server LDAP address in
MAPI/CDO object model.
Also, I am not pretty sure if I'll be impersonated as current user while
executing LDAP query or I need to prompt user for password for executing the
same?

I'll greatly appreciate if you could please answer these queries.

Thanks.