Clients not shown in my network places from server 2003 std.

Situation: Have 2 Windows 2003 Std Servers. Both are DC's in a single domain
envirnoment. Using Active directory integrated DNS, both are DNS servers.
Server 1 is file/print/DHCP/1st DNS/1st DC. Server 2 is SQL server/2nd
DNS/2nd DC.

I am not sure if this is a networking, DNS or config problem.

Problem: Cannot see any clients from My Network Places, Entire Network from
these servers. Server 1 can see the domain but only returns itself and server
2. Server 2 can see the domain but takes about a minute to return any
results, and it only see itself and server 1. All clients on the network are
Windows XP SP1 with no fire wall installed. All clients on the network can
see every other clients, including servers.

Please help?!!