vb.net office xp automation and threads

I have a windows service that uses office xp automation. Here is the
code
---------------------------------------
Public Sub CAccessSnapShot()
Try
Dim objAccess As New Access.Application()
Dim vSQLText, vThreadName As String
Try
vThreadName = Thread.CurrentThread.Name
cFunctions.WriteEventLog("starting report on thread: " &
pDBType)
Dim dtSQLText As DataTable
' GET THE SQL ASSOCIATED WITH THIS REPORT
dtSQLText = cFunctions.GetSQL(pReportRefNum,
pQConnectionString)
vSQLText = CStr(dtSQLText.Rows(0).Item("SQLText"))
Dim strMDBName, strSNPName, strAccessFuncNm As String
' GET THE NAME OF THE TEMPORARY MDB AND MAKE A COPY TO
WORK WITH
strMDBName = cFunctions.GetNewFileName(".mdb")
strMDBPath = pInputFileDir + strMDBName
System.IO.File.Copy(pInputFileDir + pInputFileName,
pInputFileDir + strMDBName)
' OPEN THE NEW COPY OF THE MDB
objAccess.OpenCurrentDatabase(pInputFileDir +
strMDBName)
' GET THE NEW NAME OF THE SNAP FILE
strSNPName = cFunctions.GetNewFileName(".snp")
strAccessFuncNm = "rpt" + pReportName
' RUN THE FUNCTION FROM ACCESS TO CREATE THE REPORT
SNAPSHOT
objAccess.Run("RunReports", pReportName, vSQLText,
pOutputFileDir, strSNPName, pConnectString)
' SHUT DOWN ACCESS AND RELEASE THE COPY FROM MEMORY

objAccess.DoCmd().Quit(Access.AcQuitOption.acQuitS aveNone)
' ------
System.Runtime.InteropServices.Marshal.ReleaseComO bject(objAccess)
' UPDATE THE QUEUE WITH THE SNAP SHOT NAME AND DELETE
THE COPY OF THE MDB
cFunctions.WriteEventLog("complete report on thread: " &
vThreadName)
cFunctions.UpdateRptComplete(pReportRefNum, strSNPName,
pQConnectionString)
System.IO.File.Delete(strMDBPath)
'RaiseEvent ThreadDone(pDBType)
Catch errorVariable As Exception
'Error trapping
cFunctions.UpdateReportError(pReportRefNum,
errorVariable.Message.ToString, pQConnectionString)
cFunctions.WriteEventLog("GPReportServer.NET-Error: " &
errorVariable.Message.ToString)

objAccess.DoCmd().Quit(Access.AcQuitOption.acQuitS aveNone)
' -----
System.Runtime.InteropServices.Marshal.ReleaseComO bject(objAccess)
Finally
RaiseEvent ThreadDone(pDBType, vThreadName)
End Try
'CType(state, AutoResetEvent).Set()
Catch
Catch errorVariable As Exception
'Error trapping
cFunctions.UpdateReportError(pReportRefNum,
errorVariable.Message.ToString, pQConnectionString)
cFunctions.WriteEventLog("GPReportServer.NET-Error: " &
errorVariable.Message.ToString)
End Try
End Sub

-----------------------------------------------------
I have a driver sub routine that creates a set of threads. Then on each
tread it calls this sub if there is a request for an access report. He
problem is if 2 or more threads are running at the same time, when the
first thread ends and issues the quit, it seems to affect all instances
of access in memory. The all stop running. How can I issue the quit to
just the thread this sub is running on???

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