Most of you people are searching for software for your Bluetooth Dongles or Bluetooth devices over Internet. Don't worry there is a hidden blue tooth software in Windows XP and Vista.
Follow the below mentioned method for this Blue tooth trick.
1. Open the run command.
2. Now type 'fsquirt' without quotes. This will open a window with text Welcome to Bluetooth File Transfer Wizard.
3. Now just select whether you want to send or receive any file and you are done.