My 2 year old did this the other day after coming home from an arcade and seeing quarters being pumped into games.... I ordered a special screwdriver on ebay to open it up.
like this one
http://cgi.ebay.com/Tri-wing-Cross-Screwdriver-For-NDS-NDSL-Lite-Wii-PSP_W0QQitemZ180260290321QQcmdZViewItem I am still waiting for it. I am hoping that I will be able to get the coins out. We'll see what happens...
Amanda
July 2008