Hacking a clan forums /server?

Is it possible for one of you nice chaps to hack a a Clan website or even there servers?

Its an ArmA 2 server and I hate there guts! Just becasye I dont play as a team member one evining they booted me from teh clan and forums so I want some pay back!

How can I do this without be detected???

Erm Dude,Im Pretty Sure Hacking Websites/Servers Is Illegal.

Of course it is illegal, but if it is a game server (which i am assuming it is) then you will not get in much trouble if any. And just to be safe use a VPN (HotSpot Shield).
Then you would have to figure out where there server is located, by getting the IP and scanning for ports. Then you would have to try to connect to the IP by Telnet I think. Or you could just DOS them right then and there (that is very illegal so be safe)

Or you could just get there email and send them a Rat. Check out RidingSlow's post for a couple tools. (down a little bit from here). Then steal there password and username and login and crash there server or do some shit like that.