[s][/s] for strikethrough is something you can use on the forum, like
PHP Code:
[b][/b] for bold or [i][/i] for italic. 
Except here

The effect is this:

eLhabib, you can use the guide I posted to use a DMZ for the PS3's IP, thus allowing you to keep your firewall up and have both the PS3 and the computer on at the same time