Aloha,
I don't know if this will help but I have a ATI All-In-Wonder 9800 video card using XP Pro as OS but here goes. According to my manual, it says to click on Monitor (display)in your control panel and then click on settings. Click on the advanced button and then click on Displays. Click on monitor or TV to set your settings. I don't know if your Radeon menu is the same as the ATI's but I would think it should be similar. I only have my card going to the monitor and not to the TV so I don't know if this will work for you. Hope this helps. TIA
Mahalo,
doogdoog
I don't know if this will help but I have a ATI All-In-Wonder 9800 video card using XP Pro as OS but here goes. According to my manual, it says to click on Monitor (display)in your control panel and then click on settings. Click on the advanced button and then click on Displays. Click on monitor or TV to set your settings. I don't know if your Radeon menu is the same as the ATI's but I would think it should be similar. I only have my card going to the monitor and not to the TV so I don't know if this will work for you. Hope this helps. TIA
Mahalo,
doogdoog