Вотт так:
Option Explicit

Private Declare Function lstrlenW Lib "kernel32" (ByVal lpString As Long) As Long

Private Declare Function NetServerEnum Lib "netapi32" ( _
strServername As Any, _
ByVal level As Long, _
bufptr As Long, _
ByVal prefmaxlen As Long, _
entriesread As Long, _
totalentries As Long, _
ByVal servertype As Long, _
strDomain As Any, _
resumehandle As Long) As Long

Private Declare Function NetApiBufferFree Lib "Netapi32.dll" (ByVal lpBuffer As Long) As Long

Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length As Long)

Private Const SV_TYPE_SERVER As Long = &H2
Private Const SV_TYPE_SQLSERVER As Long = &H4

Private Type SV_100
platform As Long
name As Long
End Type

Public Sub GetSQLServers()
'
' You could change this to be a function returning
' a list of the SQL servers in a ADOR Recordset or an array etc.
'
' At present, it just does a debug.print of all the
' SQL servers on the network.
'
'
Dim l As Long
Dim entriesread As Long
Dim totalentries As Long
Dim hREsume As Long
Dim bufptr As Long
Dim level As Long
Dim prefmaxlen As Long
Dim lType As Long
Dim domain() As Byte
Dim i As Long
Dim sv100 As SV_100

level = 100
prefmaxlen = -1

lType = SV_TYPE_SQLSERVER
domain = "placeYourDomainNameHere" & vbNullChar
l = NetServerEnum(ByVal 0&, _
level, _
bufptr, _
prefmaxlen, _
entriesread, _
totalentries, _
lType, _
domain(0), _
hREsume)

If l = 0 Or l = 234& Then
For i = 0 To entriesread - 1
CopyMemory sv100, ByVal bufptr, Len(sv100)
Debug.Print Pointer2stringw(sv100.name)
bufptr = bufptr + Len(sv100)
Next i
End If
NetApiBufferFree bufptr
'
End Sub

Private Function Pointer2stringw(ByVal l As Long) As String
Dim buffer() As Byte
Dim nLen As Long
'
nLen = lstrlenW(l) * 2
If nLen Then
ReDim buffer(0 To (nLen - 1)) As Byte
CopyMemory buffer(0), ByVal l, nLen
Pointer2stringw = buffer
End If
End Function