[CentOS] Modem USB 3G

[Mário Gamito]

Hi,

I'm trying to install a USB 3G modem, a HUAWEI E220, but when I run
# comgt -d /dev/ttyUSB0

I get the error:
"[root at deckard files]# comgt -d /dev/ttyUSB0
comgt 19:12:30 -> -- Error Report --
comgt 19:12:30 -> ---->                       ^
comgt 19:12:30 -> Error @74, line 4, Could not write to COM device. (1)"

I've google about it, but find anything useful.

Any ideas ?

Any help would be appreciated.

Warm Regards,
Mário Gamito