Problem adding informix jdbc to jasperreport server

[WarOne]

hi,

i need to create a data source which will connect my report to informix DB.

i have downloaded ifxjdbc.jar, ifxjdbcx.jar, ifxtools.jar, ifxsqlj.jar, ifxlang.jar and ifxlsupp.jar and then i copied all the files to apache-tomcat/lib

then restart the server. but when i create a new datasource, the informix is not on the dropdown list.

is there anymore setup that i need to configure? please help...