hi... need some help

just bought Logitech V470 wireless mouse..

it connect via bluetooth.. however, everytime i start my laptop, it has to be connect manually via the bluetooth find device window..
i cant get it auto connect to my mouse even i press the connect button at the bottom of the mouse...

so, how can i connect automatically ??

FYI, i already install the logitech set point software..whenever i restart the software automatically prompt and after sometime it failed to detect the mouse,,, i have to use windows bluetooth device properties window instead..

i'm running on windows vista, with external bluetooth dongle..

Pls help

Thanks