My Wii won't show up on my television.?

What used to happen is, I would turn my Wii on, then turn my television on and go down a channel and the Wii screen would show up. I recently rearranged my room and my television is in a different spot as well as my Wii. Now when I turn my Wii and television on, I go down a channel and it goes to channel 98 and it's just a gray blurry screen. I have AT&T U-verse cable, so there is a remote to that, but my actual television doesn't have its own remote. When I went down a channel, I just had to do it manually. I am missing my Wii manual and my television manual. My television is one of the older ones with the big box on the back, not a flat screen. Can someone please help?