From the KC Wizards website
The Kansas City Wizards will hold open tryouts for players 18 years of age and older on February 23 – 24, 2008. The tryouts, held at the Wizards Swope Park Training Center, are open to the first 300 registrants. In the event of inclement weather, tryouts will be held indoors at an alternate facility. Finalists will be given the chance to tryout with the Wizards first team and, potentially, sign a professional contract. Registration costs $125
Participants will take part in matches Saturday, with the top players called back for Sunday’s session. Finalists will then get the opportunity to tryout with the Wizards first team in March with the chance of securing a contract. See below for more information.
Hat tip to Down The Byline who notes that according to a Wizards source he talked to, there are already international players who have registered.