How Do Cable Tensions Affect Force and Moment Balances?

[twofish]

Homework Statement

http://members.shaw.ca/code/statics.bmp

Homework Equations

The Attempt at a Solution

I'm having a tough time getting started with this one. Obviously W= 196.2N and AD = 0.425m
Do I need to do a force-couple system?
Thanks much!
Steven

 

[waht]

This is a statics problem. What is the sum of all forces in the "x" direction and the sum of all forces in "y" direction equal to? And the sum of all moments?