"I have not been able to access the network"
That statement is a little general. What kind of access are you trying to make? Can you PING any of the Win2K machines on the network? If not, then it is an IP assignment problem, maybe the wrong subnetmask.
It could also be, as mentioned in Answer1, dependant upon the connection type: dialup, VPN, wireless, hardwired LAN.
Now, if you mean that you can PING the Win2K machines, but you can't access any shared folders on the Win2K machines, then it could just be a NetBIOS problem. Win2K can disable NetBIOS over TCP/IP, which means the Win2K machines don't listen on TCP port 139; Win95 needs TCP port 139 for file and print sharing. So, if the Win2K machines are configured to NOT use 139, then you Win95 machines will NEVER see the Win2k machines.
So, just what kind of access are you trying to get? What are you trying to do?