Bluetooth disappeared from system preferences and menu bar...

My bluetooth preferences disappearead from system preferences as well as the menu bar. I discovered this because my bluetooth mighty mouse stopped working. I tried replacing the batteries but nothing happened. I used my trackpad to click on the bluetooth icon on my menu bar and told it to connect to my mouse, which was there in the list. I got the swirling ball and so restarted my computer, when it came back, bluetooth was gone from the menu bar and system preferences, so now I don't know how to reconnect my mouse.
I tried resetting the PRAM and NVRAM as recommended by another post, I tried it twice as the instructions outline, but I haven't had any success.
I have tried doing spotlight for bluetooth in system preferences, this takes me to keyboard and mouse, then I get this message:
"The Bluetooth tab of Keyboard & Mouse preferences is hidden because you don't have a Bluetooth module installed or attached to your computer."
When I do a spotlight on the entire system, I get a result for bluetooth in system preferences, when I click on that, I get this message:
"You cannot open “Bluetooth” preferences pane because it is not available to you at this time. You might need to connect a device to your computer to see this preferences pane."
But, the irony is, that I can't connect a bluetooth device without this option in preferences. Also, in utilities, I remember that there used to be a bluetooth setup assistant, and that is not longer there.
I realize other threads have come up on this, but I haven't found anything besides deleting the plist, restarting, and resetting the PRAM and NVRAM (whatever that is). I've tried this but haven't been successful so I'm looking for more ideas.
Dan

HI Daniel,
Try deleting this file.
com.apple.preferencepanes.cache
~/Library/Caches.
Move that file to the Trash and restart your Mac.
If that doesn't help, download and install the 10.5.8 combo update available here.
http://support.apple.com/downloads/MacOS_X_10_5_8_ComboUpdate
It's ok to do this even though you are already running 10.5.8.
Make sure and repair disk permissions after the installation.
Quit any open applications/programs. Launch Disk Utility. (Applications/Utilities) Select MacintoshHD in the panel on the left, select the FirstAid tab. Click: Repair Disk Permissions. When it's finished from the Menu Bar, Quit Disk Utility and restart your Mac. If you see a long list of "messages" in the permissions window, it's ok. That can be ignored. As long as you see, "Permissions Repair Complete" when it's finished... you're done. Quit Disk Utility and restart your Mac.
Carolyn
Message was edited by: Carolyn Samit

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