Referring to dlls from within post-processing

Fellow sufferers!

My HP ALM excel report needs to look up som data in JIRA, so I am using these DLLs:

Private JiraService As New MSXML2.XMLHTTP60

Private JiraAuth As New MSXML2.XMLHTTP60

Of course, I have set theese up in my References section in Excel.

This works well from within an Excel sheet on my PC, but when I try to do the same within postprocessing in HP ALM, then It fails.

The basic question is: how can I use dll's from within my postprocessing?

BW Peter B. Hansen