Cannot connect to wireless network although I can see it!

Hi there, I have recently got repaired my pc which had previously been infected by a virus (don't know what but an IT technician got rid of it). I basically got back the pc with no software, just the operating system (XP Home). I used my existing D-Link networking adapter, installed the software and I found available networks, but can't connect to my home network.

As I was intending to install XP Pro on the pc anyway, I did so but the same problem exists. After reading a few forums I have updated some drivers, and ran the cmd's ipconfig /release, ipconfig /renew and I keep on getting back an error message which states the media card is disconnected :confused. The ipconfig/ all cmd gives me the following results:

C:\Documents and Settings\e>IPconfig/all

Windows IP Configuration

Host Name . . . . . . . . . . . . : HOME
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Broadcast
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection:

Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : Intel(R) PRO/100 VE Network Connecti
on
Physical Address. . . . . . . . . : 00-11-11-A8-3C-DB

Ethernet adapter Wireless Network Connection 4:

Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : D-Link AirPlus G DWL-G122 Wireless U
SB Adapter(rev.C) #3
Physical Address. . . . . . . . . : 00-15-E9-F7-F2-2A

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : FF-FF-FF-FF-FF-FF-FF-FF
Dhcp Enabled. . . . . . . . . . . : No
IP Address. . . . . . . . . . . . : fe80::5445:5245:444f%5
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled

I have read some previous posts but can't find the solution, please help. Thanks in advance.