Oracle Database Express Edition (XE)

I have an excel-macro which accesses data from Oracle9i database with the connection code;

Set oOraSession = CreateObject("OracleInProcServer.XOraSession")
Set oOraDatabase = oOraSession.OpenDatabase("iois", "bacc/password", 0&)

It runs smoothly with no problems. When I test the same application to my newly installed XE database, using the connection code;

Set oOraSession = CreateObject("OracleInProcServer.XOraSession")
Set oOraDatabase = oOraSession.OpenDatabase("XE.world", "bacc/password", 0&)

it didnt run and broadcasts an error msg.;

Runtime error '429'
ActiveX component can't create object


I know there's a way to solve this but how?

Arnel