Cannot open "System Preferences" on iMac

[morales3000]

I have an iMac 20" Aluminum OS X 10.5.8 core duo..the problem is I can get access to "system preferences" to make a set up to view on TV..I
How can open "system preferences" ?

 

[OrangeSVTguy]

Are you trying to get it to open up on your external TV? It opens up automatically on your default screen which is your internal monitor. If you want it to open up on your TV, just open it normally on your monitor and drag it to your external TV screen.