Database can be accessed by all I have installed Oracle 10g Lite on an administrative system with 32-bit Windows XP as the OS. I have N client systems with a mix of 32/64-bit Windows 7/8 OSes. 

How can I configure the server as well as the clients so that the database can be accessed by all? With it we have a wireless router, IB-WRX300-N , providing the internet to all.
When you say Oracle 10g Lite I assume you mean Express Edition.  I recommend you read through the documentation, particularly the section on Connecting to the Database.  If you have a more specific question after reading that, we would be glad to help.