Oracle Remote Connection String in ASP.Net

I m using Oracle 10g and i want to connect it from a pc in LAN. i m using this
connection string 

Provider=MSDAORA.1;User ID=schema;Data Source=Registra;Persist Security
Info=False

For Example Oralce is installed in PC1 and i want to connect it from PC2. 

what would be changes in connection string.

Further More i want to extract schema of connected data base. User
"schema" is constructed under "SYS".

plz help me.

Your datasources parameters might be stored into the "tnsnames.ora"
file located in folder network\admin under Oracle installation folder (e.g.
"D:\oracle\ora92\network\ADMIN" for me). At least that's how I'm
working with Oracle. But since we have DBAs I don't know much about its
administration apart from that ^_^;

Look for "Registra" in the file and check if you can modify PC1 (or
its IP address) by PC2. My datasources look like this:

MYDATASOURCE  = 
  (DESCRIPTION = 
    (ADDRESS_LIST = 
        (ADDRESS = 
          (COMMUNITY = tcp)
          (PROTOCOL = TCP)
          (Host = oracleserver.corp)
          (Port = 9999)
        )
    )
    (CONNECT_DATA = (SID = MYDATASOURCE)
    )
  )