Finding root in windows through VB

hi, does anyone know how to get the root directry in windows, for eg: my root dir is C:\windows\
but this can change, there can be instances when the root is d:\windows or D:\windows.000\ or E:\windows, how can i determine this through VB?
thanx

http://www.vbapi.com/ref/g/getwindowsdirectory.html

:)

The following code will return the Windows directory:

Declare Function GetWindowsDirectory Lib "Kernel32" Alias "GetWindowsDirectoryA" (ByVal strWinDir As String, ByVal dblListLen As Long) As Long

strWinDir = String$(255, Chr$(0))

lngListLen = GetWindowsDirectory(strWinDir, Len(strWinDir))
strWinDir = Left$(strWinDir, lngListLen)
If Right$(strWinDir, 1) <> "\" Then strWinDir = strWinDir + "\"

thanx a trill