Yep, I concur, same issue here. You can create an OracleProvider project by copying the SqlNetTiersProvider files, then to take a stored procedure building shortcut, you can download the free tool from Oracle: SQL Developer.
http://www.oracle.com/technology/products/database/sql_developer/index.html
Warning, it's written in Java, so it's kind of kludgy and slow. Also it doesn't like Vista too much, so it wants to switch compatibility, but it still works
There is a function off the menu: Migration -> Translation Scratch Editor.
If you have the database schema loaded in MSSQL Server, you can grab each procedure that was created by nettiers and translate them there.
This may be a hassle if you aren't an MSSQL person, but if you are, it works quite well and you don't have to learn much about PL-SQL to get up and running