how to make a spell check program in vb using openoffice word

[progvar]

hi
i am getting probleum in converting a spell check progrma made in vb 6.0 and Ms-office Word into OpenOffice Word

when i made spell check program in Ms-Word and vb 6.0 it works fine
but i use the following code to make spell check program on OpenOffice and vb 6.0 it shows error "OBJECT REQUIRED" on line Set vReturn = vSpeller.SPELL(sWord, aLocale, args()) when correct spelling is stored in sWord variable

in previous program when a correct spelling came it skip that word and go to next word
i also want to how to create a custum dictionary in openOffice like Ms-Office Custom.dic

Dim sWord As String
Dim vReturn As Object
Dim i As Integer
Dim aLocale As Object
Dim oSM As Object
Dim oPropertyValue As Object
Dim emptyArgs As Object
Dim vSpeller As Variant
Dim vSpellAlternatives As Object
'Dim oRet As SODispatchInterceptor
Dim args()
Set oSM = CreateObject("com.sun.star.ServiceManager")
Set aLocale = oSM.Bridge_GetStruct("com.sun.star.lang.Locale")
Set vSpeller = oSM.CreateInstance("com.sun.star.linguistic2.Spell Checker")
Set oPropertyValue = oSM.Bridge_GetStruct("com.sun.star.beans.PropertyV alue")
aLocale.Language = "en"
aLocale.Country = "US"
sWord = "Healthy"
Set vReturn = vSpeller.SPELL(sWord, aLocale, args())
MsgBox Join(vReturn.getalternatives(), vbCrLf)

thanks in advance
varinder