Why am I not able to just reconnect with restarting Windows?I am using a 2007 Dell 520 Latitude (used), windows XP Pro version 5.1, Intel PROset wireless

Bluetooth is not at all working on my dell inspiron 15R N5110 after i installed win 8. I downloaded several Bluetooth drivers from dell, but nothing seems to work. i Have a Bluetooth icon on my task bar, but when i click there for options, it is blank.

I see there is Latitude 10 or Latitude ST2E tablets. What is the difference? I see there is a BIOS update version A04 for the Latitude 10. There is a BIOS update version A03 for the Latitude ST2E.