My ethernet is not been detected in Ubuntu 12.04

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http://askubuntu.com – I'm very new to Ubuntu, all of a sudden my internet is not working in my Ubuntu machine. But fortunately the internet is working in my Windows machine. The ethernet cable is not even gets detected in my Ubuntu machine. As a new user to Ubuntu, this is really frustrating. Are there any ways to use internet in Ubuntu? Edit: Doing ifconfig eth0: eth0 Link encap:Ethernet HWaddr 6c:f0:49:c4:7f:2d UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 col (HowTos)