After almost a week of searching around on the internet, I finally found out why my BlueTooth in my laptop was not working... here is an excerpt from This Help Page at IBM:
Symptom
The Bluetooth indicator does not turn on.
Solution
Press Fn+F5 to open the Wireless Radio Control and turn on the Integrated Bluetooth features. Whenever you start the computer or resume operation after it has been in standby or hibernation mode, you must turn on the Bluetooth features.
Note: Select ThinkPad models include a Bluetooth button.
and FYI, if you are running a ThinkPad R40, R50/p, R51 (1829, 1830, 1831, 1836), T40/p, T41/p, T42/p, X31, X40, you can Download the Latest BlueTooth Drivers Here.