Custom Profile Modification

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How to put some lines to file example in account chanes. Its should be like this?

// Get the user's account details from the database...

$query = "SELECT * FROM ".$prefix."users WHERE username='$loggedinname'";
$result = mysql_query($query);
$num = mysql_numrows($result);
$ame=@mysql_result($result,$i,"ame");
$location=@mysql_result($result,$i,"location");
$age=@mysql_result($result,$i,"age");
$occupation=@mysql_result($result,$i,"occupation");
$interests=@mysql_result($result,$i,"interests");
$profilepic=@mysql_result($result,$i,"profilepic");
$displayquote=@mysql_result($result,$i,"displayquote");
$usercss=@mysql_result($result,$i,"usercss");

$ame = stripslashes($ame);
$location = stripslashes($location);
$age = stripslashes($age);
$occupation = stripslashes($occupation);
$interests = stripslashes($interests);
$profilepic = stripslashes($profilepic);
$displayquote = stripslashes($displayquote);
$usercss = stripslashes($usercss); 
//Loop out code
$i=0;
while ($i < 1) {

Actualy I dont know how to modify properly account.php and register.php and how change this:

Make sure you change the profile2.php files theme url, to: $themeurl = "templates/default/usertemp.html";

And add the following to the Theme Definitions: