Can't connect to the internet Via ethernet cable.

Hello,

I've just recently installed Lucid Puppy 5.2 on an old computer of mine and have now encountered some problems getting connected to the internet.My computer is a Compaq Presario S4000NX with a 2.4 GHz Intel Celeron Processor, 128 MB of RAM, and 40GB hard drive.So yesterday I decided to experiment with Linux on this old desktop which was running windows XP. It was painfully slow and was just about ready to be scrapped, but I decided to try and see if running Puppy could help speed it up. I burned the .iso file to a CD and loaded Puppy onto the computer, this went by without a hitch, however when I ran Barry's Simple Network Manager and tried to connect to eth0 I would receive an error message saying something along the lines of "Connection attempt was not successful, our scan shows the network does exist but we are unable to connect.". I was told by a user on a different forum to download a .PET called Frisbee, but running this program has not helped resolve the issue. Additional Info:My computer is attached directly to my modem by an ethernet cable.I also have a D-Link Wireless Adapter USB (model:DWA-125) but am unable to get this to work either.Any help on this problem would be greatly appreciated.

Please help.

I didn't find the right solution from the Internet.

References:-
http://www.murga-linux.com/puppy/viewtopic.php?t=64540
software explainer video

Thanks