So, as I have said before, finally I have replaced my primary computer and now I'm using Windows Vista x64 on it.
This is a Bloutooth USB Adapter from Kensington. (K33085)
I remember I bought it on September 2004 when I was in Virginia. It is still working, however it won't work on my new PC.
There is nothing wrong with it, it is just Kensington that refuses to make a driver for Windows Vista.
They won't make a driver, they won't open source the driver, they just want me to buy their new model.
I would understand that if Microsoft made a new, totally different Operating System every year, it may be difficult for Kensington to provide support and drivers for their products continuously. But this is not the case. And Windows Vista was released at the beginning of 2007, that means they drop support for the device before it was 3 years old.
So, today I had to buy a new Bluetooth USB Adapter, obviously it wasn't Kensington, it was D-Link. (And I won't buy anything Kensington anymore, and I wouldn't recommend the brand to anyone either). This new Adapter is the D-Link DBT-122, in its box it didn't say anything about working on Windows Vista (as it was manufactured on 2006), however as soon as I plugged it on my computer the driver was downloaded automatically from Windows Update, just the way things should be.
And I think Microsoft should get rid of companies like Kensington, not allowing them to put the "Certified for Windows" logo on their products, and not WHQL certifying their drivers anymore. Since probably they won't work on Macintosh either and nobody using Linux would buy anything from them since their drivers are not Open Source, they would just have to get out of the business, or limit themselves to make their cable locks that I have read could be opened with a pen and some toilet paper.