How to connect a form to MySql

I have a form. When the user add an entry, it should get added in the Mysql table.
How is it done.
Again, I have a databse of 600 records typed in excel can I use it as my MySql database so that I don't have to type it again.

Here is part of the form.

<FORM ACTION='email.php3' METHOD='POST'>

Your ID:<BR>
<INPUT TYPE='text' NAME='CatID' SIZE='20' MAXLENGTH='30'>
<P>
Your name <BR>
<INPUT TYPE='text' NAME='CatName' SIZE='20' MAXLENGTH='30'>


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Thanks
Shantanu
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// Split the variables into their individual variables..
while (list($name, $value) = each($HTTP_POST_VARS));

// connect into the database..
$db = mysql_connect ("localhost","username", "password");
mysql_select_db("database",$db);

// Inserting the values into tablename..
$sql_insert = "INSERT INTO tablename ( catID, catName ) VALUES ( '$catID', '$catName' )";

mysql_query($sql_insert);

good luck with the rest
scoobydoo