oraoledb.oracle not registered on local machine

Hello Guys

I have a C# application which runs fine on a 32 bit environment using a 32 bit client and having MSDAORA as the provider.

Now i need to migrate that to a 64 bit environment.

First question would be what oracle i need to install with what components? 32 bit or 64 bit oracle.

I installed the 32 bit client. I got the error OraOLEDB.oracle not registered on the local machine.

I tried registering the dll throught the regsvr32 command also have set the path variable.

IS there anything else i should be trying? or any solutions would be welcome thanks