Larry, here goes the instantiation of oUsuario object:

WITH THIS.PARENT
lcLoginName = ALLTRIM(.txtLoginName.VALUE)
SELECT iID, cLoginName, mSenha FROM Usuarios;
WHERE ALLTRIM(cLoginName) == lcLoginName;
INTO CURSOR curTempUsuario
IF _Tally > 0
IF ALLTRIM(curTempUsuario.mSenha) == ALLTRIM(.txtSenha.VALUE)
PUBLIC oUsuario
oUsuario = CREATEOBJECT("cusUsuario",curTempUsuario.iID)
.Release
...etc..

I have setup disks (generated by vfp) from which I install the application, be in a win 9x box, or on a NT box... in win 9x it works... in NT it doesn't. And the win9x boxes is not my develop machine.

Any more clue?

Thanks