MsiGetUserInfo

function MsiGetUserInfo(

  szProduct: LPCTSTR;

  lpUserNameBuf: LPTSTR;

  var pcchUserNameBuf: DWORD;

  lpOrgNameBuf: LPTSTR;

  var pcchOrgNameBuf: DWORD;

  lpSerialBuf: LPTSTR;

  var pcchSerialBuf: DWORD

):USERINFOSTATE;