Why 98 won’t connect to a network share?

I am running a Windows NT 4.0 w/SP6 network and have a 98 laptop. When I have the laptop connected directly to the network, I do not have any problems. When I use dial up networking using RAS, I can connect to the network. I can browse network neighborhood. I can also get email from the exchange server.

When I try double clicking on a server with a network share, I error out. But when the laptop is connected locally on the network there are no problems.

Can anyone give me a hand here?