please help

Dear sir
After sending ModemData.txt  to you and you informed me that it's agrsm 
i search the net and did the following

1. installed all required packages gcc,dkms,.. etc and kernel-headers 
and kernel-devel
2. installed agrsm-11c11040-2.1.80-20110811.tar.bz2 and followed the 
instructions using dodkms
3. laoded the modules using modprobe and made the symlinks and setserial
4. but when I used agrs-test i got the following output

Checking for utility wvdialconf
Found /usr/bin/wvdialconf, preparing to run:
     wvdialconf /etc/wvdial.conf

ttyS0<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
ttyS0<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud
ttyS0<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.
Modem Port Scan<*1>: S1   S2   S3
ttySAGR<*1>: ATQ0 V1 E1 -- failed with 2400 baud, next try: 9600 baud
ttySAGR<*1>: ATQ0 V1 E1 -- failed with 9600 baud, next try: 115200 baud
ttySAGR<*1>: ATQ0 V1 E1 -- and failed too at 115200, giving up.

A reboot may be necessary before modem detection through:
     sudo modprobe agrserial
Which will load agrmodem, agrserial and create the symbolic link needed for:
     sudo wvdialconf

The installation record has been written to ./agrsm-test.txt

5. I tried to disable the audio from bios and use pci kernel option but 
no use


Any help will be appreciated as I'm working with this issue from 3 days

Useful Info

kernel version 2.6.32-71.el6.i686
Distrb        CentOS 6

also I don't know if this version of the driver is compatible with the 
kernel version or not and I need to know how can I remove this driver if 
i need to install another one

Thanks in advance....

Best Regards