bluetooth dongle, need drivers or not?

OK, so here with that , you have which type of Bluetooth, means , in market we see a various Bluetooth like t link , millennium, scan, china , you want driver of your Bluetooth dongle you can download from a internet , you will see a cod on your Bluetooth dongle just type that code or manufacture company name on net , you can get driver what you want for your dongle , and install but when you type code & manufacture company write win OS name. Example :> t -link 0005450 Bluetooth dongle driver for win xp some time Bluetooth dongle not need a driver , in win 7 we don't need a driver for Bluetooth dongle 99% not but 1 % need a driver ,when you install your dongel in pc or laptop after 1 minute it will be automatically install driver for its work , OK thank you i am from India