Hebcal and Microsoft Office

When we switched over to microsoft office, Hebcal would no longer work with outlook.  Is anyone else having this problem?  I have asked our IT support company to look into this and they have not been able to solve it.  It used to be so easy and now I am not clear about how to solve this.  Even before the switch, we were having a lot of trouble with duplicates and were told by our IT people that it could only be cleared up manually.  But now I don't have it at all!