thx, rickenbacherus

My computer is a Pentium(R) 4 CPU 2.00GHz, 480 MB of ram

My ethernet controller/card is: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+

When i do ping in Knoppix with website (ping google.com), it goes:

ping: unknown host google.com

When i go ping with IP (ping 216.239.39.99 [google ip]), it goes:

PING: 216.239.39.99 56 bytes of data
ping: wrote 216.239.39.99 64 chars, ret=-1

ping: sendto: Network is unreachable

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I think that Knoppix doesn't know that an ethernet card is there, so it cant access it, and I dunno have to make it work...

What should i do?