Oracle 10g installation

Hi,
I want to create an oracle database manually (Oracle 10g).
My script is of oracle9i.There is a script called 'context.sql',
in which there is something called 'dr0csys'.  
But this is found missing in Oracle 10g.  What is the equivalent in 10g?
Can I skip this step?

thanks in advance,

johnson

Every new release/platform that I work with I always create new database 
creation scripts using dbca (Database Configuration Assistant).  I would not 
use 9i DB Creation scripts to build 10g database.

Here's a thread where I posted 10g scripts that I used on Solaris:
   Create Oracle Database 10g database on Solaris

but you should really create your own using "dbca":
   Using DBCA to Create and Configure a Database