Calling an api sub

I've asked this before and thought I was given enough info to resolve my problem , what am I doing wrong??.

Using LotusScript , which is essentially VB

Here is parts of the code

First my declaration:

Declare Sub Get_Noise Lib "C:\Bits\Raffles\SG100\SG100\ISAF_N1.dll" Alias "_Get_Noise_std@16" (Byte_PTR as String , Byval Bytes As Long,  Byval Error_Code As Long, Byval Exception As Long)

Dim gstr as string
gstr=Space(8)
ErrorCode=1
Exception=1
Call Get_Noise(gstr,1,ErrorCode, Exception)

When the Call executes , the app crashes, so I'm sending wrong info to the dll. I've tried all sotrs of variations to no avail. Below is the only documentation I have for this dll. Addionally , what does the asterisk signify in the first line?
********************************************************
void Get_Noise( uchar *Byte_PTR, ulong Bytes, ulong *Error_Code, ulong
*Exception);
The call returns a string, of specified length, of random bytes, to
memory buffer at address Byte_PTR.

File Type: DLL

         Section contains the following Exports for ISAF_N1.DLL

                   0 characteristics
            3EADF853 time date stamp Tue Apr 29 03:58:11 2003
                 0.0 version
                   1 base
                  10 # functions
                  10 # names

            ordinal hint   name

                  1    0   DLL_Setup  (00001460)
                  3    1   Get_Noise  (000023b0)
                  4    2   Get_Noise_Ex  (000027f0)
                  7    3   Init_Noise_Thread  (000013a0)
                  8    4   Insert_Ciphertext  (00002b50)
                  9    5   Insert_Noise  (000019e0)
                  A    6   Release_UpdateLock  (00002d30)
                  C    7   SG100_Password  (00002f70)
                  E    8   SG100_Random  (00002e60)
                 10    9   Set_Status_Noise_Thread  (00001610)
                  2    A   _DLL_Setup_std@8  (00001440)
                  5    B   _Get_Noise_Ex_std@20  (000027c0)
                  6    C   _Get_Noise_std@16  (00002390)
                  B    D   _Release_UpdateLock_std@8  (00002d10)
                  D    E   _SG100_Password_std@16  (00002f50)
                  F    F   _SG100_Random_std@12  (00002e40)

     Summary

        2000 .bss
        2000 .data
        1000 .edata
        1000 .idata
        1000 .rdata
        1000 .reloc
        1000 .rsrc
        1000 .sdata
        6000 .text
********************************************************