Full signal strength but not connection?

Hey
I've been having problems with my new wireless USB, after I replaced my old one (which worked just fine). It flickers between fully connected with 100% signal strength to disconnected and no activity. Needless to say, I can't access the internet during either of these, regardless of what the icons say.
I've tried everything my simple mind could coume up with - pretty much turning it on and off and switching to Zero Config - but without success.
I have no idea what I'm doing, so if I could just spam a load of images, that might help.
Here's the stuff I tried doing to understand the problem:

(C) Copyright 1985-2001 Microsoft Corp.
C:\Documents and Settings\User4>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : GERHART
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Broadcast
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Local Area Connection:
Media State . . . . . . . . . . . : Media disconnected
Description . . . . . . . . . . . : Realtek RTL8168/8111 PCI-E Gigabit E
thernet NIC
Physical Address. . . . . . . . . : 00-19-D1-A2-3C-AA
Ethernet adapter Wireless Network Connection 5:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : ADD-NWU281 Wireless LAN USB Adapter
Physical Address. . . . . . . . . : 00-E0-4C-07-CF-18
Dhcp Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IP Address. . . . . . . . . . . . : 0.0.0.0
Subnet Mask . . . . . . . . . . . : 0.0.0.0
IP Address. . . . . . . . . . . . : fe80::2e0:4cff:fe07:cf18%6
Default Gateway . . . . . . . . . :
DHCP Server . . . . . . . . . . . : 255.255.255.255
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
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::ffff:ffff:fffd%5
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled
C:\Documents and Settings\User4>ping 127.0.0.1
Pinging 127.0.0.1 with 32 bytes of data:
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Ping statistics for 127.0.0.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 0ms, Average = 0ms
C:\Documents and Settings\User4>sc query w2c5vc
[SC] EnumQueryServicesStatus:OpenService FAILED 1060:
The specified service does not exist as an installed service.


I can't make any sense out of that, so I tried wandering around the computer, but didn't get that either
Particular importance, I think, on these two?

http://imageshack.us/f/696/62994449.png/
http://imageshack.us/f/18/21478986.png/

~*~

http://imageshack.us/f/703/87222242.png/
http://imageshack.us/f/441/53550628.png/
http://imageshack.us/f/213/95250146.png/
http://imageshack.us/f/404/31537315.png/
http://imageshack.us/f/821/24975283.png/

Sorry about the information overload, I just didn't know what was useful or not. Thanks so much or reading, and it'd be fantastic if you had any suggestions! (at all)

Any ideas at all would be appreciated greatly, if just for this:
http://imageshack.us/photo/my-images/18/21478986.png/