You need to add references to libraries like:
- CrystalDecisions.CrystalReports.Engine
- CrystalDecisions.Shared etc.
If not already done so, you can download the documentation from this site:
http://www.sdn.sap.com/irj/scn/weblogs?blog=/pub/wlg/14514[
^]. I recall that there were also some examples you could download.