Using Speechlib

Some of my old code that I used a while back(which in the old executable) still works, however now It will not work at this date when compiling, as I wish to use it with some slight differences.

this is just a snipit of the code

vb Code:

Public WithEvents RC As SpeechLib.SpSharedRecoContext 'SpSharedRecoContext
    Public myGrammar As SpeechLib.ISpeechRecoGrammar
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        RC = New SpSharedRecoContext 'ERROR here
        myGrammar = RC.CreateGrammar
        myGrammar.DictationSetState(SpeechRuleState.SGDSInactive)

I've tried compiling on the same machine(previously reformatted), and a newer computer(Vista), which give two different errors when running

The error on XP gives "Creating an instance of the COM component with the CLSID{47206204-5ECA-960F-00C04F8EE628} from the IclassFactory failed due to the following error: 8004503a"
The error on the Vista PC gives some message "speech recognition could not start because the language configuration is not supported"

This is really aggravating me as this SHOULD work.

What was it orginally compiled under? XP?

yes, it was XP, however which service pack, I am unsure of.