Hi..
You just need to pass the value of one text box in your page to another page...
Than just use this kind of code
//Page one code for showing text box
...
<form action=secondpage.html method=post>
<input type=text name=t1>
<input type=submit>
</form>
....
//page 2 code for displaying using php
<?
$x=$_POST['t1'];
echo $x;
?>
Simple