what did I miss in com interop?

I am just trying C# express 2005 ( beta 2) from a limited XP pro user account. I setup a C# assembly as COM component for interop with some legacy application that can use either COM interface or the traditiona Native DLL interface.  I ran into some rather unspecified errrors.  I suspect its either the name space that I got wrong or something with my code or project setup.

what did I miss in the following

project info
   Project name SomeClass
   Output type: Class Library
      Assembly info:
         COM Visible
         GUID generated by the studio express
         default namespace SomeClass

The source code I tried:
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;

namespace SomeClass
{
    public class ArrayClass
    {
        public int testInt()
        {
            return 6999;
        }

        public int ReturnStringArray(String sIn, out String[] newStrs)
        {
            newStrs = sIn.Split(' ');
            return newStrs.Length;
        }
    }

My unmanaged native client ( some C++ Built application thant can conume use OLE , COM...)

OleObject objClass
objClass = create OleObject

int rc
rc = objClass.connectToNewObject("SomeClass.ArrayClass")
    // fails here with return code -2 - cannot create class ( i used vbscript to check this part out
/*
  I tried to use the GUID string, "SomeClass.SomeClass.ArrayClass")
  but none worked
*/
long lSz
String lstrOut[]
Integer i

lSz = -9
mle_1.text = "~r~ncalling testInt()~r~n"
lSz = objClass.testInt()
mle_1.text += " returned long value of " +string(lSz)+ " ~r~n"

lSz = -9
mle_1.text += "~r~ncalling testscalar ~r~n"
String lstrtst
lSz = objClass.testscalar(sle_in.text, Ref lstrtst);
mle_1.text += " returned lSz=" +string(lSz) +" StrOut=" + lstrtst + "~r~n~r~n"

I also tried without namespace in c#:

    public class ArrayClass
    {
        public int testInt()
        {
            return 6999;
        }

        public int ReturnStringArray(String sIn, out String[] newStrs)
        {
            newStrs = sIn.Split(' ');
            return newStrs.Length;
        }
    }

Or should I use the it just work approach for DLL   ( I don't really understand what to do there either )