Configure Kppp on FC6

[omidkamangar]

Hi,
I have added a US Robotics modem to my PC and want to configure it on FC6. I got the driver (RPM file) from DriverGuide.com and installed it. Now I want to configure KPPP. I have entered the required information, but when I click Query Modem in KPPP's modem configuration window, I syays that the modem is busy.
Can anyone help ?

[omidkamangar]

I foun the solution.
1st. The chipset is HSF Conexant. The driver can be downloaded from Linuxant.com
2.nd To choose the system (i586 or i686) I used uname -m and it gives i686. When i got the i686 version and installed it again it failed. Instead when I use

rpm -q --qf '%{ARCH}\n' kernel

it prits i586 and when I installed it, it worked perfectly.