Then you need some Application server, or you can run it from Developer suite.
You only need some connection string, which can be configured within tnsnames.ora file, in Application server or Developer suite Oracle Home, or you can use the Easy Connect Naming Method.
Depending on what you choose, you may need some more configurations.
how to configure a connection string within tnsnames.ora file?
tnsnames.ora is a text file, normally in ORACLE_HOME/network/admin directory, which contains parameters necessary to connect to remote databases. Example :
(ADDRESS = (PROTOCOL = TCP)(HOST = <database server name>)(PORT = 1521))
(SERVICE_NAME = XE)
You can manually edit it, or use netca (Net Configuration Assistant) from Oracle menu. See 5 Configuration and Administration Tools Overview
You connect to the database (XE in above example) as username/password@xe
What's your experience with Oracle stuff ?