Many of those old sets had a DVI input, and a simple DVI to HDMI adapter cable will work. But again, the TV would have to support 720p in the DVI input (DVI is digital, just like HDMI, just no audio path). No Roku device available that is still supported (other than the Express+ 3710/3910) has the ability to output an analog signal. And frankly an SD analog signal probably isn't going to look very good on that set.