I use my old 9" tab for a second display using software called iDisplay it was originally for Ipads etc. but it has now been developed for androids, its refresh rate is pretty laggy over wifi, but i just use it for my winamp playlist and functions. its supposed to be able to connect to you pc via usb by enabling the usb debug mode , but all attempts i have made of this have been unsuccessful , so im sticking to the wifi. its recognised as an extended desktop so a nifty program to have on you android :).