Ok, I did this about a week back for Reliance Netconnect . Maybe it will work for your model as well.
Instead of the old hag wvdial, I use KPPP for connecting. You will be able to configure it looking at the above page and it gives you graphs and all that as well.
Also, I didn't need to load the module each time in Hardy Heron hence I don't use the script.
I will put up a detailed tutorial for setting it up very soon.