Wow! I love x-guys!!!
All I had to do is
Code:
INSERT INTO xcart_config VALUES ('specialid', 'Special Product id (leave empty if not needed)', '64', 'Appearance', 300, 'text');
and now I can use this variable in any php
Code:
$specialid = $config["Appearance"]["specialid"];
and master can modify it in
"Control panel" -> "General" -> "Appearance"
Could not be better!
Uraaaa! to x-men!