Wired connection not working

[njk123]

My ethernet card is not working at all since 4 days. Tried everything but no help. Here is what happens.

1) When I turn on windows(on desktop) should network connected (linux)
2) When I give both machines the same address, windows shows an error for ipconflict.
3) Ping is also not possible from both the machines.
4) This is the ifconfig

eth0 Link encap:Ethernet HWaddr 00:1e:c9:01:63:df
inet addr:192.168.0.2 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::21e:c9ff:fe01:63df/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:152 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 B) TX bytes:19731 (19.7 KB)
Interrupt:17

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:14312 errors:0 dropped:0 overruns:0 frame:0
TX packets:14312 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:721026 (721.0 KB) TX bytes:721026 (721.0 KB)

[Iowan]

These are two different machines?
If they are separate machines, they must NOT have the same IP address... although the addresses must be in the same subnet.
What is IP address of Windows machine?
Is (Are) address(es) via DHCP server (router or modem) or are they manually set (static)?