Invalid progid - iis 5.1

I am trying to setup my website on my XP Pro machine.
RUnning IIS 5.1, classic ASP website

My website contains custom dll's for connection to the db and session
state.
These components are registered via component services.
I have checked in the registry to confirm they are there.
I continue to get the following error:

=B7 Error Type:
Active Server Pages, ASP 0134 (0x80004005)
The object has an invalid ProgID of 'brantleyWebState.CSession'.
/ASPTemplate/common.asp, line 1


Line one is below: