I would imagine it is the same tournament, since you mentioned it is 10-12 days. Click on
http://www.usabaseball.com/ot/usab-joly-home.html and then click on the link toward the top of the page titled "2006-Field West" or "2006-Field East" to see if the team who contacted you is listed as a participant. There is a maximum age to play (born no earlier than May 1, 1989) but I'm not aware of any minimum age. At age 15, you'll be eligible for consideration for the Youth National Team, whereas my son, who will be there but was born before Jan. 1, 1990, will be considered too "old" for the YNT.