on the laptop try
ipconfig/all
you should get a response like . . .
Note the bold responses. Your IP, gateway, DHCP, and DNS should all ping.
And check the date the LEASE OBTAINED. That is the lease on your DHCP assigned IP address. Should be today.
(oh and flush your DNS. Type 'ipconfig /flushdns' in the Command Prompt, and press Enter.)
ipconfig /all
Windows 2000 IP Configuration Host Name . . . . . . . . . . . . : tss-avery-babel Primary
DNS Suffix . . . . . . . : dns1.someschool.edu
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : dns1.someschool.edu
someschool.edu
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : 3Com EtherLink 10/100 PCI For Complete PC Management NIC (3C905C-TX)
Physical Address. . . . . . . . . : 00-01-03-AB-0E-6P
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 192.168.0.10
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.0.254
DHCP Server . . . . . . . . . . . : 192.168.0.35
DNS Servers . . . . . . . . . . . : 192.168.0.12 192.168.0.13 Primary
WINS Server . . . . . . . : 192.168.0.37
Secondary WINS Server . . . . . . : 192.168.0.38
Lease Obtained. . . . . . . . . . : Wednesday, January 1, 2003 11:17:41 AM
Lease Expires . . . . . . . . . . : Friday, January 3, 2003 11:17:41 AM