convert DB drivers from MS Access to SQL Server in run

I am using cr 8.5 and I am lunching reports with PEOpenPrintJob and s.o. IPA
functions. I am trying to convert DB drivers from MS Access to SQL Server. I
am using PELogOnServer, PESetNthTableLogOnInfo, PESetNthTableLocation and I
am getting err. msg "Unable to open database." on execution StartPrintJob
API function. Is any body had same problem?
Thank you in advance.Check the values in logoninfo structure.|||I did. I hardcoded my server, db, uid, psw. everything looks OK, but...?

Thank you.