ADSL connection problem

I have a problem with my ADSL modem. The ADSL supports web-based 
configuration. It's IP address is 192.168.1.1. To connect to that IP my 
ethernet card should be configured with a static IP address 192.168.1.* [*=2 
to 254] with a subnet mask 255.255.255.0.When Fedora core starts it 
autometically detects my ethernet. I am sure about that as "ifconfig eth0" 
gives the proper information. To test whether my Ethernet card can 
communicate with the ADSL or not I do a ping test to my ADSL (192.168.1.1). 
But it do not work.
Using static IP address I was able to communicate with my ADSL (and also 
able to connect to the Internet) in FC4 last week. So, there is no driver 
problem. But after restart the problem started. I think it is some kind of 
mis-configuration problem. Can anyone help me on this ?

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I love Linux and I want to be free (and independent) from Windows. From last 
3 years I am converting to be a Linux user/programmer. But still now I 
cannot connect to the Internet from Linux. So, please help me to overcome 
this problem.