Data source definition screen

Hello!
I try to create a DSN in order to connect my ColdFusion application with
Oracle db using MS ODBC manager. I am using Personal Oracle 8.0 on Win98. To define a data source, I
1) opened the ODBC manager by double clicking on the ODBC iconin the
Control Panel.
2) Selected the “add” button, then selected the ODBC Driver for ORACLE.
But when I clicked ?Finish?, the data source definition screen did not
appear. What could be a solution?
To create a data source for Access db -MS ODBC Manager works just perfect!
Thank you in advance.
Laura