xl not closing

[Bolerophone]

I'm creating a xl worksheet i VB6 using the following code.

Public objXL As New Excel.Application
Public wbXL As New Excel.Workbook
Public wsXL As New Excel.Worksheet


    Set wbXL = Workbooks.Open(App.Path & "\test.xls") 
    Set wsXL = wbXL.Worksheets.Add(, Worksheets(1))

i close these in this manner.

wbXL.Save
    Set wsXL = Nothing
    wbXL.Close False
    Set wbXL = Nothing
    Set objXL = Nothing

After executing above code, when i open the task manager there still is an instance of xl process in memory.

i hv win xp, vb6 SP5 , office2k. can any1 help

-amresh-