Cannot Browser nor Connect Client to Client in a Home Domain

Hi all:

OK, here's my setup:

Home Network: Domain Based NT 4.0 Server; 1 WinXP Pro Client and 1
Windows2000 Pro Client all connected via DSL Router and DSL Modem.

My NT 4 Server is the PDC and dishes out TCP/IP addresses (DCHP Server) and
the Router/HUB is does the firewall work (rather well, I might add) and my
WinXP Pro's firewall stuff is uninstalled/disabled.

My problem is that I need peer-networking abilities within my network. Just
simple file browsing and connectity between WinXP and Win2000 Pro clients.
I need no elaborate solutions. Oh, by the way, I want to acheive this
without the Netbeui protocol. Just straight TCP/IP, thank you. What am I
overlooking?

Thanks in advance,
Terence
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