Configuring the Huawei E220 modem

[060456F]

I want to configure the Huawei E220 modem I recently bought in Fedora 10. I read lot of detail documents in the internet. All were interesting and explaining the wvdial.conf file. The problem I have is that, the file asks for the phone # to dial, username & a password. I don't have these information since my ISP didn't provide those.
It works perfectly in Windows, in which above information are not needed, because when plugged in Windows, a software installation launches, which does the job to connect to the internet.
So, is there a way to configure the modem to connect to the internet without those information. Because my ISP refuses to provide those, when I called there customer services.