netshareenum problem

Why is it that the code below (slightly modified from MSDN http://msdn.microsoft.com/library/default.asp?url=/library/en-us/netmgmt/netmgmt/netshareenum.asp) gives the following error:

error C2664: 'NetShareEnum' : cannot convert parameter 1 from 'unsigned short *' to 'char *'

how do I pass a server name to netsharenum?

#include "stdafx.h"
#define UNICODE
#include <windows.h>
#include <stdio.h>
#include <lm.h>

void wmain( int argc, TCHAR *lpszArgv[])
{
   PSHARE_INFO_1 BufPtr,p;
   NET_API_STATUS res;
   LPTSTR   lpszServer = NULL;

   DWORD er=0,tr=0,resume=0, i;

   //
   do // begin do
   {
      res = NetShareEnum (lpszServer, 1, (LPBYTE *) &BufPtr, MAX_PREFERRED_LENGTH, &er, &tr, &resume);
      //
      // If the call succeeds
      //
      if(res == ERROR_SUCCESS || res == ERROR_MORE_DATA)
      {
         p=BufPtr;
         //
         // Loop through the entries;
         //  print retrieved data.
         //
         for(i=1;i<=er;i++)
         {
            printf("%s\n",p->shi1_netname);

         }
         //
         // Free the allocated buffer.
         //
         NetApiBufferFree(BufPtr);
      }
      else
         printf("Error: %ld\n",res);
   }
   // Continue to call NetShareEnum while
   //  there are more entries.
   //
   while (res==ERROR_MORE_DATA); // end do
   return;
}