I've heard and read about some great websites recently with resources for Macarthur parents so I thought I'd list them here. I'll also add them to the Macarthur's Most blogroll permanently. Let me know if you'd like to see any others listed.
macarthurparents.com.au - provides articles and resources aimed at parents in the Macarthur area. Much of the information is focused on careers, training and employment so it's great for parents of adolescents and teens.
camdenmacarthurchildcare.com.au - a directory of child care services in Macarthur. It's doesn't provide comprehensive details of all centres but it's a good place to start if looking for child care and also provides links to professionals and other local services.
aroundyou.com.au - simply enter your postcode to find a list of upcoming events, courses, activities, shows and performances in the local area. You can sort by category (such as 'kids activities' or search by keyword and add events to your calendar with the click of a button. You can also get involved in charities and causes, and discover places to go.