Just bought microsoft wireless optical mouse and

Hopefully it came with an install CD ? Firstly keep the old mouse plugged until this one works. Now install the software from CD. With PC turned off plug in the wireless receiver to a spare USB port and power back on. Make sure youve got good batteries in the mouse. Now press the button on the wireless receiver and the lights should be flashing. While they are flashing press the button underneath the mouse. They should now be communicating and the mouse should work. If all is well turn off PC and disconnect old mouse. If you didnt get a CD dont worry if you give me the model of it i can find the software on the internet. ...........cheers from Scott