HWID System (vb > Php > Mysql) Not Working?

Im going to get started.Im setting up an hwid login for my vb.net program,

To be safe, im not directly connecting to my db from the program, because if it was cracked, my db info is leaked,so i want it running through php,

this is my current php code

<?php
$con = mysql_connect("localhost","username","password");
if (!$con)
{
die('Could not connect: ' . mysql_error());

[Code]...

of course, i have removed my db info, but im getting this error Parse error: syntax error, unexpected T_VARIABLE in db.php on line 10

I cant seem to find what the problem is, what i want to do is have the program submit the hwid like this site.com/db.php?hwid=hwid here and have it echo the name in the row of the hwid submitted.