I was helping one of my relatives to setup his Suntel CDMA dialup with Ubuntu last week. To my surprise I found that wvdial is not present in the standard Karmic Distribution eventhough it was present in my Intrepid box by default. Now I was facing a chicken egg issue having to access internet before connecting to via the dialup :D. I was bit concerned as well because installing a deb package off-line can be a painful experience due to missing dependency issues. Fortunately I found wvdial with all the dependancies in this Ubunt Forums post. http://ubuntuforums.org/showthread.php?t=1138101 . After downloading that in my machine and installing in my relative’s machine rest of configurations went smoothly and I was able to help him connect to internet in a matter of minutes.
Thanks GeorgeVita of Ubuntu Forums for saving my day. :D. By the way, for the most part I was following this how to. http://kalpapathum.blogspot.com/2007/03/suntel-and-lanka-bell-cdma-phones.html . Thanks for the original author as well.