Web Sites with Oracle scripts

Does anyone know of web sites with scripts for Oracle Personal edition? They're the ones used with the sample tables- EMP, DEPT, etc. I have searched my entire hard drive but to no avail.
Some are / ext_rbs.sql / ins_dept1.sql /srt_dd.sql / etc

Maybe they are in a directory that I don't know if. Any assistance would be appreciated.
Thanks

There are 2 scripts in C:\oracle\ora81\sqlplus\demo:

demobld.sql and demodrop.sql

Note that the path above could be different depending on where ORACLE_HOME is.