Convert pps powerpoint file to flash or .wmv file

Hi, we need some one to created a system to convert power point file ( .pps , .ppsx , ppt, .pttx ) in flash file. We see a lot of system who make this in a personal pc But we need this system to work on server with a cron work. Our site recived every hour many pps file and we need to convert them in flash to put them in our website. Thus the work Find a way to convert the file directly in server You can do this in linux or windows server is not a problem we have both of them. thanks