EV-DO on ubuntu 9.04
Using an EV-DO internet connection on your ubuntu was never that hard, but then again, its boring repeating the same steps on every new installation of ubuntu(unless you have a script to automate it; i.e.). Usually you have to mount the USB modem(type usbfs, just in case you`r wondering) and manually create a symbolic link /dev/modem which points to /dev/USBtty0 so that wvdialconf recognizes your usb device as the modem to be used.
However, In Ubuntu 9.04 i was surprised that mounting and creation of the symbolic link had taken place automatically.
So, all i had to do was run :-
$ wvdialconf
This resulted in the creation of a wvdial.conf file in the /etc directory which could be edited and used for saving the username and password.
However connecting using ‘wvdial’ still caused a problem; it just would`nt connect. Figuring out the solution was`nt hard though – There was a line which read :-
Modem – /dev/USBSL0
All i had to do was change it to
Modem – /dev/USBttyS0
and whoallah! Connected to cyberspace! 
But the speed sucks! And i have no clue WHY!
Wanna know how bad the speed was…?
I was on a brand new Vista using IE…. i had better browsing speeds there. No kidding!
Hey, my problem is I didnt get wvdial intalled on my system. I am using Ubuntu 9.04. Please tell me some way to get wvdial, or to get connected to the internet. I am using this on my home desktop, which I cannot connect to the internet, to directly download from there.
on 9.04 as you connect the evdo card, it is automatically detected. Click on network manager(top right corner) and go to edit connections. Fill in your username and password and use the network manager to connect.
Hope this helps!!
Cheers