modem configuration proble for zoltrix F

GOT ZOLTRIX FM-SFT56I INTERNAL MODEM TESTING NT 5 BETA 2, DOWN LOADED DRIVER FOR MODEM FROM ZOLTRIX SITE, NT DOES NOT RECOGNIZE THE DEVICE AS PLUG AND PLAY, MANULAY SELECTED AND LOADED THE DRIVER , NT RECOGNIZES BUT RUNNING DIAG/REFERHING THE MODEM IT FAILS TO RESPOND, MODEM IS AUTOMARICLY ASSIGND COM2, UNABLE TO CHANGE COM ASSIGNMENT, MODEM DOES NOT HAVE JUMPERS FOR COM PORT.
MODEM IS PLUG AND PLAY COMPATIBEL AND IS WORKING FINE IN WIN 98
IN WIN 98 THE MODEM IS ASSIGNED COM3

PLESE ANY ONE CAN HELP

KNC