I have an Acecat Flair USB Pen and graphics Tablet, of 2004 make. The tablet is working and I see the red light on top right corner. I put in the new AAAA battery in the pen and when I write it on the tablet, I don't see the light going green on the tablet nor any response on the computer screen. I clicked (pressed) on button on the side of the pen but seen no response. I also tried it in Art Dabbler software. I don't see the pen cursor movement on the screen. How do I find, where the problem is and what to be done ? Is there an independent way of checking the functioning of the pen ? Thanks Bhaskar