Win2K and Win9x in a WinNT4 network problems

I am having problems accessing a Windows2K Pro machine from a Windows98 machine.
We have a WinNT4 Server acting as a primary domain controller. I have configured both the Win98 machine and the Win2K machine to use the following protocols:
-TCP/IP (dynamic IP)
-IPX/SPX compatible protocol (with NETBIOS enabled over IPX/SPX)
I also installed the ff services:
-Client for Microsoft Network
-File & printer sharing for Microsoft networks
Both machines belong to the same domain.
Both computers are visible in NETWORK NEIGHBORHOOD (in both computers), and I can access the Win98 machine from the Win2K machine without any problems. However, when I try to access the Win2K machine from the Win98 machine I get the message: "Computer does not exist on the network". I also get the same message when I try to access a WinXP machine from the Win98 machine.
What's wrong with my configuration?

1. RE: Win2K and Win9x in a WinNT4 network problems
DJ Net2Infinity Apr-02-02 09:20 PM
In response to message 0

You have to make sure you are actually sharing something on the 2k and XP machine, and why are you using IPX/SPX thats for Netware?

4. RE: Win2K and Win9x in a WinNT4 network problems
francis3 Apr-04-02 04:25 AM
In response to message 1

I'm actually sharing my printer and a drive(partition). The NT/XP/2K machines can access the shares but our Win9x machines can't. I'm really confused. All Win9x machines can't access any of the NT/XP/2K shares except the shares at the file server.
(By the way, the IPX/SPX is for a software we are using).

3. RE: Win2K and Win9x in a WinNT4 network problems
lbyard Apr-03-02 12:14 PM
In response to message 0

Also, do you have a DHCP server running? Larry

5. RE: Win2K and Win9x in a WinNT4 network problems
francis3 Apr-04-02 04:44 AM
In response to message 3

Yes, I have a DHCP server running. When I first installed NT4, I forgot to install the DHCP server. I only added it after I realized I forgot to add it (I was upgrading from NT 3.51). Does it matter if I added it AFTER installation?
Prior to installing NT4, we were on a peer-to-peer network and everything was running fine. We have 2 Win95s, 18 Win98/98SEs, 4 WinMEs, and 1 Win2K Pro machine. I can access the Win2K Pro shares from the Win9x machines. When we added 2 XP machines and our WinNT4 domain controller, that was when this whole mess started. (Forgot to include this on my first post. Sorry...).
Did I forget to do to something? Does having IPX/SPX running have anything to do with this?

7. RE: Win2K and Win9x in a WinNT4 network problems
lbyard Apr-04-02 11:54 AM
In response to message 5

>Does having IPX/SPX running have anything to do with this?

It might. I found I had to remove netBEUI when added an XP computer to my network. Larry

8. RE: Win2K and Win9x in a WinNT4 network problems
francis3 Apr-04-02 08:05 PM
In response to message 7

Thanks for the info. I'll try your suggestion today. This has been bugging me for over a week now. I've tried the Microsoft Knowledge Base but found nothing about this. I've gone through the other posts here and have gathered additional info which might solve this problem.
It is interesting to note however that when I configured the other workstations to work with TCP/IP ONLY, they were'nt able to access the machines running IPX/SPX and TCP/IP. When I added IPX/SPX to ALL workstations, everything went OK (except for my current dillema).
Can't figure this out myself. Anyway, I also found out recently that:
1.) NetBIOS over TCP/IP is enabled by default on some machines
2.) I'm also running NetBIOS over IPX/SPX on some machines
This might be where the conflict is arising.