Question : Error in installation of Oracle 11g R2 on RHEL 5.3

I am installing oracle 11gR2 on RHEL5.3.This machine is VM based, i have downloaded two zip files from oracle website with names " linux_11gR2_database_1of2.zip and linux_11gR2_database_2of2.zip."
When I run
. /runInstaller the setup starts and at the completion of 38% i received an error

****File not found /oracle/app/oracle/product/11.2.0/db_1/owb/external/oc4j_applications/applications/WFMLRSVCApp.ear****

and i am not able to proceed further.
Please help out.........

Answer : Error in installation of Oracle 11g R2 on RHEL 5.3

They need to be in the same folder.  That's what the link says.