more ipv6 issues

hi,I am helping a friend configure his Dell laptop to connect to my Linksys
router so we can play games online. I have unchecked ipv6 from the wireless
card so its not used but I still get low connectivity. I cecked out the
cable guys article on tech net
(http://www.microsoft.com/technet/com...uy/cg0506.mspx)
about configuring ipv6 and I set the registry entry to prefer ipv4 over ipv6
and still we cant play. It claims due to high latency but we have tried it
from within the same room as the router. Here is the ipconfig/all for his
system.

Windows IP Configuration

Host Name . . . . . . . . . . . . : BPC
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : mad

Wireless LAN adapter Wireless Network Connection:

Connection-specific DNS Suffix . : mad
Description . . . . . . . . . . . : Dell Wireless 1390 WLAN Mini-Card
Physical Address. . . . . . . . . : 00-1B-FC-51-82-A1
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.1.102(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Sunday, September 23, 2007 10:46:27 AM
Lease Expires . . . . . . . . . . : Monday, September 24, 2007 10:46:27 AM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 24.196.64.53
68.115.71.53
24.159.193.40
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom 440x 10/100 Integrated
Controller
Physical Address. . . . . . . . . : 00-18-8B-CB-D8-4B
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes

Any help would be appreciated as I don't know what else to try myself.
Thanks a lot.