Dynamic text willnot load in IE

I have set up a site with dynamic text comming from a php and mysql source it will load fine in Firefox and Safari but when i try to load it in Internet explorer it will load the data from the last time IE was run. I know that i can change this by going to tools, internet options and put my settings to load the page every time but i dont want all my users to have to do that.

here is my code

flash button actionscript


on (release) {
 loadVariables("sites.php", this, "GET");
 gotoAndPlay(52);
}

sites.php


<?php
$aUsers = array();
$dbh=mysql_connect ("localhost", "username", "password") or die ('I cannot connect to the database because: ' . mysql_error());
mysql_select_db ("database"); 
$data = mysql_query("SELECT * from baseInfo") 
or die(mysql_error()); 
while($row = mysql_fetch_array( $data )) 
{ 
//echo $row['retailer'];
$x = $row['aboutUs'];  
print "text=$x"; 
} 
//The value of $x would be printed to the screen and because of the prefix 'myVar=', the SWF will //interpret this as being the intended value for the variable myVar in the SWF
?>