About Ms509 Problem

I have a problem with my ms509 scanner. When I try to connect it to my pc (I use windows xp sp3) the pc doesn’t recognise it. It recognise an “unknow device”. I have install the software of the cd but the problem remain. Also, the light of the display is on while the scanner is conected to the pc, but I can’t turn on the scanner while it is connected. Could anyone help me? Could anyone give me some instructions, drivers, etc for connect the ms509 scanner to my pc and print my data? I have tried in three differents pcs and the problem is the same. The MS509 Autel Scanner is new and has software 2.03. What is the last version of maxiscan ms509 scanner? Where can I find it? How can I install it?