Australian Lottery sent letter telling me I've won tons of money, must contact them within 14 days Northhampton Other

First I received phone calls, then letters started. All say I entered a lottery won lots of money. I asked can I have my lawyer contact you, they said no, you must do what we say to get your money. One letter included a check.The letter today said I have 14 days to contact to see how to get the money. When something is too good to be true you know it to be suspicious.
I'm turning all information over to State Attorney in my state of Illinois. Some people may be taken in by this and that is a shame.

At the top it has Audit Control Number D2A610 and ID number of 5858 1120 7341 Also mentions an OSA agent named Dr. Spiff Jenkins
At the bottom listed are Australian Lottery Board commission names of
Lady K. Royce - Dr. S. Jenkins - Sir R. Page with pictures
Especially in this economy it is so easy to get ripped off.

Juju
Centralia, Illinois
U.S.A.