Can’t gain internet access!

Hi,

Recently, I had setup a PC(WIN95) in a NT network. When I go in to Network Neighborhood, I can see other sharing computer, but just can’t gain the internet access, don’t know why?
I added IPX/SPX, TCP/IP and NETBEUI in network properties. Try to ping the gateway, can’t find it. Then I also added Microsoft DLC32, of course, that didn’t help any. Now I’m out of ideas, could anyone help me out here?
Thanks for your time!!!

Regards,

-Mak