Bluetooth headset issues with connecting to PC (tech guys. A little help, please?)

Okay. Maybe someone can help me out with a small problem I’m having with pairing my bluetooth headset to my PC.

I recently got a bluetooth dongle as an early birthday present so I can use TeamSpeak when playing games online. Now, I initially paired my headset with the PC last night, and it worked fine. However, as soon as I disconnect from the PC, or if I turn the headset off, I can’t reconnect with the PC. The only way I can reconnect with the PC is by deleting the headset off the computer and selecting “Add New Device” again. Then, it will work perfectly. But, history repeats, and it will no longer connect if I turn off the headset.

Any ideas? Headset is a Plantronics Explorer 240. I got it last year for about $25, so it’s not the greatest headset, but it gets the job done. Not really willing to buy another one considering this one isn’t broken. Any ideas as to why there seems to be no communication between the headset and the PC after I disconnect?

Btw, here is more pertinent info that might help.
Bluetooth adapter: Iogear USB Bluetooth 2.1 Micro Adapter
Headset: Plantronics Explorer 240
PC OS: Windows Vista

Check for the latest bluetooth drivers?