On the Vista computer, try configuring it for Software-managed Bluetooth
mode:
From the Help:
Advanced Bluetooth settings
If you have a Microsoft Bluetooth transceiver, you can choose whether the
wireless connection is managed by the software or by the hardware.
Changing Advanced Bluetooth settings
Start IntelliPoint.
On the Buttons tab, make sure that the mouse you are using is selected under
Connected device.
Select the Wireless tab.
Under Bluetooth, click Advanced.
Software-managed Bluetooth mode Use this mode when you share a mouse between
multiple computers.
The software is configured automatically each time you start the computer.
You can move your mouse and the Microsoft transceiver to another computer
without installing the software or reconfiguring the device.
--------------------------------------------------------------------------------
Hardware-managed Bluetooth mode Use this mode when you use your mouse with
one computer.
Your transceiver behaves like a standard Bluetooth radio when you start your
computer and results in no delay.
--------------------------------------------------------------------------------
Hope that helps:

Signature
Cathy Moya
Microsoft Hardware User Experience
www.microsoft.com/hardware
This posting is provided AS IS with no warranties and confers no rights.
>I only have one blue tooth mouse and using it for both my office laptop
>(XP)
[quoted text clipped - 6 lines]
> there
> any good suggestion?
skinfox2003 - 03 May 2008 02:34 GMT
I couldn't find the setting as you said. I only have problem with vista. I am
using logitech bluetooth mouse. can you be more specific? thanks so much!
> On the Vista computer, try configuring it for Software-managed Bluetooth
> mode:
[quoted text clipped - 40 lines]
> > there
> > any good suggestion?
Cathy Moya [MS] - 05 May 2008 18:50 GMT
Ah, sorry, I don't know about the Logitech settings.

Signature
Cathy Moya
Microsoft Hardware User Experience
www.microsoft.com/hardware
This posting is provided AS IS with no warranties and confers no rights.
>I couldn't find the setting as you said. I only have problem with vista. I
>am
[quoted text clipped - 51 lines]
>> > there
>> > any good suggestion?
skinfox2003 - 07 May 2008 05:11 GMT
I solved this problem by installing the Logitech bluetooth mouse driver. I am
just curious; in XP I don't need to install the driver. And everytime I just
need to go find the mouse in the bluetooth setting window and right click and
select the "connect." However, Vista seems remove this function. So without
the mouse driver, the only option is re-install the device everytime.
Vista definitely should keep this function! Mouse is mouse, I don't need to
install a driver comes with other fancy settings.
> Ah, sorry, I don't know about the Logitech settings.
>
[quoted text clipped - 53 lines]
> >> > there
> >> > any good suggestion?