Well you're in luck.
According to Microsoft, beginning May 22nd, students who reside in the United States and purchase a PC valued at $700 or above from Dell, HP, or Microsoft stores will receive a brand new Xbox 360.
A few stipulations are included though such as requiring to verify your current status as a student as well as providing a valid '.edu' email address.
Although this is currently open only to US citizens Microsoft has announced they will be planning to open this deal up to Canadians in the near future.
For more information, head on over here.