Error handling declaring public variables

[mrblack]

HI,
I was wondering if I could do some basic error handling before declaring any public variables. I have written some code to create Outlook appoinment items from Excel cell values. It starts off wth declaring the public variables:

Public myOlApp As Outlook.Application
Public myItem As Outlook.AppointmentItem

But to do this the system on which the script runs must have a reference to the Outlook 11.0 object library or the compiler will throw an error message like "User-defined datatype not defined".

Is there anyway to check (and alert the user) wether the library is referenced or not? Moreover, is it possible to reference the library run-time?

[mdmackillop]

Have a look at this KB Item. Ignore the zip file (Corrupted)