Converting to WMV not using Visual Hub

Hey i really need help! I have an xbox 360 with connect 360, thus i want to stream WMVs, i have converted some vids from .mpg to .wmv using visual hub but it doesn't show up on my xbox 360, connect 360 won't share these files. Also when i burn it to a data disc and try to play it there is an error msg. All i can think of is that there is something wrong with visual hub's encoding, thus if anyone knows any reason why this is happening and how to solve the problem that'd be great, otherwise does anyone know of any free converters to wmv? i have already paid for visual hub and i don't want to pay for another movie converter. thanks