Windows 7 doesn't recognize my Apple Wireless Mouse

I installed a partition for Windows 7 through Bootcamp (OS X Lion) and installed all the bootcamp drivers for Windows. Everything is working fine, including the keyboard (an Apple wired keyboard), except my Apple wireless mouse. The bluetooth cannot find the mouse in Windows; I have to use a wired mouse to work with Windows 7.
How can I solve this issue?

Open the Windows 7 hardware tree from Control Panel, System. Scroll on down to the Blue Tooth entry and check to see if drivers are installed and that there is no ! which would indicate that Blue Tooth is not working.

I opened the Windows 7 hardware tree and in the Bluetooth Radios appeared only:
Generic Bluetooth Adapter
Microsoft Bluetooth Enumerator
and the drivers are ok for both. But when I try to add a bluetooth device, Windows recognize that I want to add an Apple Bluetooth mouse but when I ask to connect to it nothing happens, it remains trying to pair indefinitely. I think that an Apple bluetooth driver is missing, am I right?

It does sound like you're missing the Apple driver. Open up Boot Camp from Control Panel, and select software update. Let's see if it downloads updated Boot Camp drivers for you.

I think something is wrong with my Windows installation. The Bootcamp control panel is missing.
I don't know why...

Did you print and read the guidelines and download drivers and burn to a CD? If so pop the CD in and it should auto run. If not go to the DVD in My Computer and run it manually.