You have to install the intel image for the emulator and the "Intel x86 Emulator Accelerator (HAXM)" in the extras section of the Android SDK manager
Once installed, run the "IntelHaxm.exe" app in the folder "C:\adt-bundle-windows-x86-20130522\sdk\extras\intel\Hardware_Accelerated_Execution_Manager" your folder will probably be different but you can find your android sdk path int he paths section of the B4A tools menu