Connecting a dell optiplex to tv to use as second monitor can be complicated when tv has No HDMI or vga. I ordered parts so someone please reassure me...WILL THIS WORK???

SOURCE: Component Video inputs do not work

I started back in the day of tubes. A family would have one set and it would be a 19" black and white. There are different resolutions now. The components probably do work, but, they don't pass the 480i signal. The satelite converter's analog signal needs to be set to 480p and the DVD needs to be set to progressive if it does have that setting. If the DVD is not a progressive scan DVD, then, the only inputs that it will show on is the analog signal. Some of the dish converters have a switch on the face for changing the resolution. If yours doesn't then put it in an analog source and go to the menu and change it there. Then move it to the component input. Hope this helps.

SOURCE: Question regarding audio connections Akai 30" LCD TV

How to connect External Speakers (with Amplifier) or Headphones to Akai LCD 32LW7?

SOURCE: Dynex DX-LCD37 Audio with HDMI

Try connecting directly instaed of through the switch box.

SOURCE: Connecting an LCD TV to a computer to use as TV and Comp. Monitor.

Im no expert on the subject, but I use my L37 for a monitor, and use just the vga adapter. It works good as a monitor, and both dvds and my hdtv wonder tuner card look great through the vga connection. They do make adapters for dvi to hdmi. Although, hdmi also carries sound, but you wont get that out of your dvi output from your card. So you might not have sound when using that connection, as your tv may not look to the headphone type jack used for sound imput from your computer when you select the hdmi source on it. If you have speakers already connected to your computer you may not care. Also if you have a 720 p Vizio, 1366x768 is the highest resolution you are going to get out of it anyway, if I'm not mistaken. I'm Not sure why you would need 2 connectios to the same monitor either. I posted 1 link below because they had several dvi to hdmi adapters. Hope that helps.

http://www.bizrate.com/computercables_adapters/products__keyword--hdmi+dvi+d+dual+link.html

SOURCE: LG 37LC7D Connect to VGA from a PC

Your right. I just had the same "Invalid Input" issue as well and it completely relates to the resolution compatability with any VGA or HDMI connection. Check the LG website for the online manual if you don't have it and see the section on RGB-PC cable. There is a table that incdicates the Resolutions the LG product is capable of displaying.

Thanks for the help.