Looking for some help with my form please

[Foppa]

I have a simple form that I found from a tutorial but am now lost. Unfortunately I haven't learned forms yet.

My questions are: (based from the code below)

1. What do I add to my code to make the submit button, submit the info.
2. What do I add to my code to make my required fields, actually required upon submission?


HTML

<div id="stylized" class="myform">
                <form id="form" name="form" method="post" action="index.html">
                    <label>Name&nbsp;*</label>
                        <input type="text" name="name" id="name" />

                    <label>Email&nbsp;*</label>
                        <input type="text" name="email" id="email" />

                    <label>Website (URL)&nbsp;*</label>
                        <input type="text" name="website" id="website" />

                    <label>Phone Number</label>
                        <input type="text" name="phone number" id="phone number" />

                    <button type="submit"><img src="images/submit.gif" /></button>

                </form>
            </div>

CSS

.myform{
width:245px;
height: 340px;
padding: 60px 12px 0px 12px;
font-size:13px;
color: #ffffff;
}
#stylized{
background: url(images/quote-request-2.gif) no-repeat;
}
#stylized label{
display:block;
font-weight:bold;
width:140px;
text-align: left;
margin-left: 10px;
}
#stylized input{
font-size:13px;
padding:4px 2px;
width:200px;
margin:2px 0 10px 10px;
}
#stylized button{
background: none;
border: none;
margin-left:111px;
width:109px;
height: 30px;
}