Windows Server 2008 is a great operating system... especially the 64bit version.
Microsoft has put a lot of effort into their products.

And also into their marketing if you take a look at the screenshot... ;)
But why?
- The driver support is great... you can use the Vista drivers ;)
- The applications runs fast without any problems.
- I can use all of my 4GB RAM :)
- Features are not activated by default, you activate them if you need them.
- The Citrix client is running. (If you have to use VPN clients you should think about a second operating system -> Windows XP)
And yes, Bluetooth is running... I got it working without any problems on a DELL 630:
- Install the "Dell_Wireless-360-Module-wit_A01_R155463.exe"... (x64 in my case)
- Reboot... (If Windows detects new hardware after reboot DON'T install them)
- Install the "Toshiba Bluetooth Stack" for Windows Vista...
- Reboot....
- Wait until every hardware is installed correctly...
- Ready.
It works great...