Unable to connect Reliance 3G USB on Ubuntu


Hello,I have a Reliance NetConnect 3G USB modem of Huawei make (Model No E173). Apparently it does not come with any username and password. It connects easily through the wizard on Windows, but I am not able to get it to work on Ubuntu 10.10.I was able to connect on ubuntu using the earlier Reliance Netconnect modem, which came with a username and password.Could someone please let me know what settings are required for Reliance Netconnect 3G using Huawei USB device. I have got the following modules installed - usb-modeswitch-data, usb-modeswitch, wvdialBy giving APN of rcomnet as suggested in one post, I get a connection with just bar on connection strength, but browser still shows no connection.Thanks in Advance.