No internet after reinstalling of windows XP

Hello, I have just reinstalled my Windows XP because of some virus that got me :(

after i finished reinstalling i have no internet connections like there is no network connections.
basically my whole computer is destroyed i lost my internet connection, my sound card, and they where all working perfectly before the virus. i am just wondering what did i do wrong and what should i do to fix my computer.

oh my sound card and network card is installed in my desktop already its just that my computer doesn't pick up the connections.

please help me i really want to get my computer up and running agian.