The Czech Republic is part of the European Union (EU) and belongs to the Schengen Area. Many countries enjoy visa-free entry to the Czech Republic. However, citizens from some non-EU countries are required to have a valid visa when travelling to the Schengen Area. If a visa is required, be sure to apply at least a month before your visit.
More information on entrance to the Czech Republic can be found on the website: http://www.mvcr.cz/mvcren/web-useful-information.aspx
In that case, please provide the following details: full names, passport numbers and dates of issuing and expiry, dates of birth and relevant travel information.