Yes I managed to use it as a standard 56k modem. That was pretty slow but did the work for mail check etc...
you have to load the usbserial mode like this:
modprobe usbserial product=0x1400 vendor=0x1410
then you plug the card into your laptop
A red light should blink (IIRC).
then run the minicom tool with:
(this step require that /dev/modem is linked to the good device (generally ttyUSB0 but check with the output of dmesg)
When you're in, do the following:
at+cpin=xxx //here replace with your own PIN code
//wait a moment here and you should see the a green light instead of the red one
at+csq //this is to check the signal strengh
//from now this is specific to Orange (french carrier)
//I think some search on google can give you the informations
//you need for this part of the configuration
//in fact most of the pages I read were about vodafone configuration...
//then we dial the number (don't know if this is also Orange specific but I guess it's not)
After this the light should blink approximatly twice a second and be green.
Then we can juste use pppd to establish the connection
pppd ttyUSB0 defaultroute usepeerdns
Then the light stops blinking and you're connected, you can check your IP adress using ifconfig and should have some ppp0 network interface up.
You may have some problems with name resolution (DNS), if so, check your /etc/resolv.conf file, it should be a link to some /etc/pppd/resolv.conf file (the one pppd use and file from the DHCP server).
Hope this help...