Installed this driver and everything installed ok except it can't aquire network address

Computer not able to acquire the IP address is not an issue with the wireless adapter all-together. Check the device status for this Wireless N Mini USB wireless adapter under the Network Adapter category. It should say: This device is working properly.
If this is the case, you may check for any driver updates with the manufacturer.
Check for any Firewalls like Norton, McAfee, Zonealarm, Comodo, etc. Turn them off or configure them properly.
Update the operating system using Windows Automatic Updates.
On the wireless transmitter, try changing the wireless security type as "WEP" preferably 64-bit WEP with a hexadecimal password.
Finally, if even that doesn't help, try to assign static IP on the wireless network connection by right clicking on Wireless Network Connections and click Properties. Now ensure a tick next to Internet Protocol version 4. Highlight it and click on Properties on this page. Refer to your wireless router or wireless modem vendor to get this assigned.

For further clarifications, please revert!
Thanks for asking.

Regards,
Arvind S Iyer