Wireless Network issue

[netineti]

Dell Inspiron E5105
OS: Windows XP SP3

My internal wireless card was not working and I started using External USB wireless adaptor. Even that broke few weeks back and I replace the internal wireless card with Dell Wireless 1505 Draft 802.11n WLA N Mini-Card. The 'wiFi' light is on but no connectivity. Drivers were installed successfully.

IP config:
Windows IP Configuration

Host Name . . . . . . . . . . . . : tellus-89c4f0ce
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Wireless Network Connection:

Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : Dell Wireless 1505 Draft 802.11n WLA
N Mini-Card
Physical Address. . . . . . . . . : 0C-EE-E6-84-C6-9C

Ethernet adapter Network Bridge:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : MAC Bridge Miniport
Physical Address. . . . . . . . . : 32-9D-09-B5-45-C1
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Autoconfiguration IP Address. . . : 169.254.139.198
Subnet Mask . . . . . . . . . . . : 255.255.0.0
Default Gateway . . . . . . . . . : 169.254.139.198

Any help appreciated.