O.K what html code do I actually need out of all that is available ?

Obviously I need the keyowrd and the description bit but anything else ? Below is an example. Out of this what can is usefull and useless ? Will having this much hinder search engine results ? ?

<meta HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
<META HTTP-EQUIV="Reply-to" CONTENT="admin@onlyinter.net">
<META HTTP-EQUIV="content-language" content="English">
<meta NAME="AUTHOR" CONTENT="Company name">
<meta NAME="DESCRIPTION" CONTENT="Description">
<meta NAME="KEYWORDS" CONTENT="Keywords">
<META NAME="COPYRIGHT" content="Company name">
<META NAME="DISTRIBUTION" content="global">
<META NAME="RE-VISIT" content="amount of days">
<META NAME="CONTENT" content="General">

Do I need all this ? ? ?

Also more importantly if I don't use all of the above might it hinder my results OR if I use all of this might it dilute the important parts.

I was considering using just the top 2 http-equivs and also keywords and description ones...

Please help, I want to submit very soon...