zwriter   

From the rules:

Demo entry: When you demo a new O3™ racquet, you will receive a Demo Decoder Card which will contain an eleven digit alpha/numeric code.

Write-in entry: You may also enter by writing your name, address, phone number on a 3" x 5" card. Mail to:

Prince "O3™ Grand Slam Dream Trip Sweepstakes",
ATTN: Marketing, Prince Sports, Inc.,
One Advantage Court,
Bordentown, NJ 08505.

Mail-in requests must be postmarked by November 1, 2008, and received by November 8, 2008.

Upon the Sponsor’s receipt of a complying mail-in request, the Sponsor will provide you with a Demo Decoder Card. By entering the Code Card number on a designated website (www.princetennis.com/O3sweeps), the participant will be able to determine if he or she is a winner. All entries become the property of the Sponsor and will not be returned.

Limit one entry per person, and per household address, regardless of method.

btw - asking in the comments under the sweeps might be better - maybe someone who has the code will share & then you can let us all know if they CAN be shared