DRM removal/converter

I recently downoaded some WMV video's which appear to be DRM protected.

I wanted to watch these video's from a USB stick plugged into my TV usb port. But although I saved them on the stick and will play on my laptop, but the TV will not play them being not in a format required.

Tried various programs such as Nero, Prism and Aimersoft, Aimersoft will start to convert but only for a minute as its a trial. When playing back whats been converted, its abit jumpy, so alittle reluctant to purchase.

Any Freewares to convert or remove the DRM.

thanks