usb 2.0 wireless optical mouse not working

my mum bought a wireless optical mouse today its a plug and use sort of thing like my old one without any firmware needed
but its not working i have tried every usb port new batteries resetting the mouse ive searched for hours without any luck so any help will be greatly appreciated
its by dolphin http://www.dhgate.com/100pcs-new-usb-2-0-mini-wireless-optical/p-ff80808124bd54a30124c23a84d6699a.html
this site has some information on it

Is it being recognized by your computer?My wireless mouse stopped working about a week ago and I found out it was the USB stick. It wasn't making contact with the computer, now it only works if I apply weight onto it.Maybe your USB stick might be faulty.Edit: I just read the description and it says"Easy plug-and-play, no drivers required for IBM PC and Win 95/ 98/ 2000/ Me/ XP"Do you have Vista? Maybe it doesn't work on Vista.

I have windows 7 and it is registered by the computer
http://www.dolphinperipherals.com/index.html i reckon this is their home page but i couldn't find the mouse anywhere

Try going herehttp://www.dolphinperipherals.com/support.htmlEnter your mouse's serial number and download the driver.From looking at their products, none of them seem to be compatible with Windows Vista or 7. Their USB flash drives only go up to 256MB. That company probably stopped making products a long time ago.
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These are the newest products they have made, look at the date they were introduced, the newest products came out in year 2004......
That company's products don't work on Windows Vista and much less in Windows 7.http://www.dolphinperipherals.com/new.html

ive tried on the box it says it supports 7 and vista

Oh, then try entering the serial number in the link I posted earlier and see if they give you a driver to download.

i got it working i found a little instruction manual in packaging in the rubbish on the last page it tole me wat to do if it didnt just work
i had to sync the mouse and the usb things together using the reset buttons and then i found in really small print under that that you need to do it at least once per computerthanx for all the help