Vista not recognising mouse

Hi everyone,

I'm not a techy so please be patient with me!

I'm on Vista 32 bits, and I've plugged in a Laser Mouse-3DOP. I'm on a Dell
Latitude laptop D520 and with Dell and Windows I usually plug something in,
it comes up and tells me that hardware has been installed etc. This is a PS2
connection mouse but my laptop doesn't have that connection so I'm using an
adapter to USB.

I plug in the mouse, the wheel lights up, and nothing else happens.

I have looked for drivers, and seen others with this problem, but I haven't
seen a solution. If anyone can point me in the right direction I'd be
grateful!

Thanks,
Karen