Help me scam the scammer

[Klompy]

I've never sold anything on craigslist before, and I'm wondering if I'm getting scammed here or not. I got stuck with one extra ps3 that I couldn't sell before christmas. Here is the first email I got from the potential buyer.

[ QUOTE ]
Hello Seller,
I am *********from ireland,i was going through the classified ads when i came accross your advert,am really interested in buying this (Brand new ps3 60g - $630) to our New House,so please let me know the the features and condition including your last price you are willing to sell it for me.
Get me back all this asap.
Cheers ********.


[/ QUOTE ]

I sent this person an email back saying I was a little uncomfortable sending this to Ireland without getting payment first, but would be willing to work something out. Now I just got this email back.

[ QUOTE ]
Hello,
Thanks for the mail and am willing to purchase the
item from you,so the price you are selling for me is
ok by me,I will like you to withdraw the advert on net
cause i am buying from you,I will be paying with
Cashier check ,Is that ok by you,As for the shipment
my shipper will be coming for the pick-up.If this is
ok with you get me the following
informations--- >
1,Your full name to be on the Cashier check.
2,Your postal address.
3,Your phone number both land and mobile.
4,Your postal code.

Get me this as soon as possible.
Regards


[/ QUOTE ]

I know nothing about cashier checks, or really anything about selling something on craigslist. What should I do?