Help with TELUS Optik TV digital box!?

I have an older Durabrand model DCT1903R with no remote option for input (even though the online manual says it has remote control capabilities), and a Telus optik tv digital box model Cis330. I'm trying to connect a Wii through the component cables in the digital box. I also have a stereo system used for the audio which is connected to the box using RCA cables. The Telus tech who hooked up my cable connected everything, so I'm not 100% on all the connections. All I want to know is if it is possible to connect the Wii through the component cables ending up with audio and video through the TV and stereo. If it's not possible I do have a VCR that I can connect the Wii to but it would be easier to use the box so I wouldn't have to go back and forth between the two, and component has better picture.

Thanks!