Taco Salad III

16 ounces lean ground beef

1 (1.25 ounce) package taco seasoning mix

1 head iceberg lettuce

shredded

1 red onion

sliced

1 bunch green onions

chopped

1 (15 ounce) can pinto beans

drained

1 (15 ounce) can kidney beans

drained

2 large tomatoes

chopped

1 avocados - peeled

pitted

and cubed

8 ounces shredded Cheddar cheese

1 (16 ounce) package corn chips

1 (16 ounce) bottle Catalina salad dressing