Download and install Oracle Database XE 11.2g

Download Oracle Application Express 4.1 (APEX)

Tip: In case you get an ORA-12560 error, your database listener has not started.
Either start it by running “c:\oraclexe\app\oracle\product\11.2.0\server\bin\StartDB.bat” or use  the “Start DB” shortcut from the start menu.

Connect as SYS to the database console
[bash]conn sys/passw as sysdba[/bash]

Run the following sql command to setup APEX
[sql] @c:\apex\apexins myapp myapp  temp /i/
exit[/sql]