Wrapping .TLB file to .DLL for .NET

Question

I have a .tlb file(neteng.tlb) that works on a vb 6 program. This library has module-based methods that i can call anywhere and it works fine. Next I wrapped this module-based DLL(neteng.tlb) to another VB 6 COM as you have said. I did that by adding a referenced first to "neteng.tlb" library then adding the following code to the class (NETENGAPI is a module inside "neteng.tlb"): '------------------------------------ Option Explicit Public Function NE_IsNetwork1(name As String) As Boolean NE_IsNetwork1 = NETENGAPI.NE_IsNetwork(name) End Function Public Function NE_OpenNetwork1(name As String, mode As AccessModeEnum) As Long NE_OpenNetwork1 = NETENGAPI.NE_OpenNetwork(name, mode) End Function Public Sub NE_InitNetworkEngine1() Call NETENGAPI.NE_InitNetworkEngine End Sub Public Sub NE_ExitNetworkEngine1() Call NETENGAPI.NE_ExitNetworkEngine End Sub '------------------------------------ Then save the file as Netengs.DLL (class name is NetEngEng) ===>>> Process Flow: neteng.tlb wrapped inside ->netengs.dll Note: Netengs.dll purpose was to call those module-based methods inside neteng.tlb thru the class NetEngEng so we can expose them when we migrate it to .NET assembly code. I created another VB6 Prog to test netengs.dll if its gonna work (i add a referenced first to netengs.dll). See code below:. Option Explicit Dim shp As String Dim net As NetEngs.NetEngEng Private Sub Form_Load() Set net = New NetEngEng Call net.NE_InitNetworkEngine1 shp = "d:\tracking\shapes\roadcenter_mkt_only.nws" 'Dim net As New NetEngs.NetEngEng Dim bool As Boolean 'bool = net.NE_IsNetwork1(shp) bool = net.NE_IsNetwork1(shp) If bool Then MsgBox ("Is network") Else MsgBox ("Is not network") End If Dim ne As Long ne = net.NE_OpenNetwork1(shp, 1) If (ne = 0) Then MsgBox "Network " + shp + " not found.", vbCritical Exit Sub End If Call net.NE_ExitNetworkEngine1 End Sub '----------- but when i run the prog and it step into the code Call net.NE_InitNetworkEngine1 it raises this error: The instruction at "0x00001de2" referenced at "0x00001de2". The memory could not be "read." My neteng.dll that wraps neteng.tlb don't even work inside another vb 6 prog. Whats wrong with neteng.dll here? Am i missing something? It would be more disaster if i import this to interop assembly. Tnx!