Infrared Connection problem...

I am having problem to connect my 6600 to my pc by using infrared device...all the settings are done...pc suit had been installed...so...I activate the infrared of my 6600....get close to the infrared device of my pc...finally...both my 6600 and pc are connected...however...problem comes... after both are connected...I can't send any files to my 6600...when I try to transfer any file to my 6600...the connection will cut off automatically... Sometimes...it even restart my 6600 automatically...what is going on?...can anyone help???