<h1>Sayfa</h1>
<form action="XXXX.php">
1 de 2 de 3 de =)
<p>
<input type="radio" name="number" value="bir" >1<br />
<input type="radio" name="number" value="iki" >2<br />
<input type="radio" name="number" value="uc" >3<br />
</p>

<input style="float:right;" type="image" src="yolla.gif" value="" / >
</form>

Bu kod işine yarar sanırım