No more internet connection after installing 54g card

I hope you will help me to find the solution.
I bought a Belkin 54g router and a network card for my laptop (a HP-Compaq
Evo 1020v)
As soon as I installed the card, I saw the router, good but impossible to
connect to the internet and I receive no IP address.
I have an old laptop which work with the card.
I have Win XP and now each time the computer restarts I have an error
message "The TCP-IP network transport is not installed".
I had to do a restore.
I contacted Belkin but they don't know the problem because the card is
working with another laptop.

I installed the latest driver but still not working.
I don't know what to do.

Thank you for your help