This might do it for you

[vba]

Public Const LOCALE_SENGLANGUAGE As Long = &H1001

Public Declare Function GetSystemDefaultLCID Lib "kernel32" () As Long

Public Declare Function GetLocaleInfo Lib "kernel32" Alias "GetLocaleInfoA" ( _
ByVal Locale As Long, _
ByVal LCType As Long, _
ByVal lpLCData As String, _
ByVal cchData As Long) As Long


Public Function GetUserLocaleInfo(ByVal dwLocaleID As Long, _
ByVal dwLCType As Long) As String
Dim sReturn As String
Dim r As Long

r = GetLocaleInfo(dwLocaleID, dwLCType, sReturn, Len(sReturn))

If r Then

sReturn = Space$(r)
r = GetLocaleInfo(dwLocaleID, dwLCType, sReturn, Len(sReturn))
If r Then

GetUserLocaleInfo = Left$(sReturn, r - 1)
End If
End If
End Function

Sub testit()
MsgBox GetUserLocaleInfo(GetSystemDefaultLCID(), LOCALE_SENGLANGUAGE)
End Sub
[/vba]