Start Up Conflict with Hardware Addy

I am having trouble getting my computer to recognise the address for using the router. When I install the TCP/IP DRIVER and restart the computer it kicks it back out because it says there is a conflict with the hardware address
the message I get isIP conflict192.168.1.1 hardware with address00:20:E0:14:AE:62
I have had no luck finding the information to correct this problem and wonder if you folks might be able to point me in the right direction.
Many Thanks: KennJ