Make sure you only use biodegradable laundry detergent labeled for greywater use. Also, there are a few more rules for using greywater so be sure to read those at the end of this instructable.
Step 1: Laundry Greywater Parts
5/8 inch spade drill bit
Garden Hose Adapter 3/4 " MH X 1/2" MIP- part is in the faucet section of Home Depot, not in the garden hose or irrigation area. (Watts brand A-663 GH3) http://www.watts.com/pro/_productsFull.asp?catId=68&parCat=2680&pid=6508&ref=2
'Faucet Rosette Washer and Nut (1/2" IPS) - Danco brand
3/4" diameter garden hose
Trash can (I think mine is 20 gall, but use a larger one)