Help Me Pls! Castle Siege Time Changes!

HI, i need you to really help me. I know i've made another post yesterday about this, but i really need an answer and i can't find it..
The thing is We need to change the siege time and date in a EMU server
I've been told to cange the database castles table, the thing is. i have no idea how, to.
If you people can please give me some Guide about it, i mean, really explain to me how can i change the siege time and date. i would realle apreciate it.. it would make my day! :eat_arrow
I really hope you can help me with this, i'm desperate!!!
I'm sorry about my horrible English, i've done my best so you can understand what i'm saying, but, of course, I know I SUCK