[Firebird-net-provider] how to change parameter prefix

[<le...@po...>]

Hello,
I need to have the C# .NET 2.0 application that could use both firebird 
and/or oracle as a database engine. What is the best way to hide the 
difference in parameter prefix? In firebird it is '@' in oracle it is 
':' May be it is possible to explicitly set in firebird provider a 
prefix to ':'?
Best regards,
...michal