Laptop NIC problem

Hi I have problems with my Laptop, Dell Inspiron 6000 with windows XP Pro. My son spill a milk on it ( I know I know ) and he fired HDD and CD drive. I replaced HDD and reinstall Windows XP Pro with all drivers, but now I’m not able to connect to the Internet with Ethernet cable. I’m able to connect wireless. The strange thing for me is that Windows is reading NIC (Broadcom 440x 10/100 Integrated Controller) and its MAC Address, but when I plug the cable , said “no connection, cable is unplugged”. I know that everything is ok with the cable because it is running perfect on my desktop. Any help is appreciated.
Thanks
Daniela