Bluetooth driver installation problem

Hello

I having a problem while installing the bluetooth driver for my Dell Inspiron 1545 for Vista

I download the driver from this page  , the unzip was successfull but it's once when I tried to open the unzipped exe that I got an error.

When I double clicked the exe file I got a new window from vista with something like "Independent installationprogram for Windows Update" (i'm translating the error because I have a dutch version of vista)

Then I got the error "The update is not compatible for your system", when I click the "OK" button on this window I had a new window "would you like to install the driver with best settings" and when I did this it didn't changed anything.

Sorry if the translation is not perfect but I hope you will understand it.

Thank you