I need to know what kind of cables to use to hook up my vizio hd TV

We'll need more information to be of much help.

Was the TV sold for use in the US? Is it an actual TV or just an "HD Ready" display?

What are your programing sources? They might include an antenna, VCR, VCR/DVD player combo, DVD player, BluRay Player, DVR, Satellite receiver, video game console and/or cable converter. We'll need to know which outputs the programming sources are equipped with (HDMI, Component, Composite, Stereo/Audio etc). Caution some satellite receivers and/or cable converters have output connections that are not activated by the provider's software.

How many of which inputs is your TV equipped with? Feel free to include a list of what labeling the manufacturer attached to the cabinet to identify the inputs.

If your programming sources exceed the number of inputs on your TV you might want to purchase a switch box from a video game shop or other consumer electronics retailer.

Content providers (satellite and cable) and equipment manufacturers might provide information and connection diagrams in user manuals or support sections of their web site.