Are your customers accessing your computer using the internet?

If yes just use html and php to save the input to the form.

Somrething like this:
Code: 
<form action="save.php" method="post"> 
<h5>Name</h5>
<input type="text" name="name"  size="50" />
<h5>Address</h5>
<input type="text" name="address"  size="50" />
<br /> 
<input type="submit" value="Save"> <input type="reset" value="Reset">
</form>

and for my save.php...
PHP Code: 
<?php 
$file 
"file.txt"
$outFile fopen($file'a+'); 

// get input data and add to file 
$out $_POST['name']; 
fwrite($outFile$out." \r\n"); 
$out $_POST['address']; 
fwrite($outFile$out." \r\n"); 

// finished close file
fclose($outFile); 
?>
Of course you can add/remove as many inputs and fwrite statements as needed.