Universal Data Wrapper

Can any one show me an example or code for a universal data wrapper, i want my program to be able to use most command DBMS like, sql server, access, db2, oraicle etc

i found one but the codes in C i think, i only use vb.net

http://www.15seconds.com/issue/040127.htm

This is a real nice idea, cos it will allow users to connect to pretty much any dbms NICEEEE

Does anyone who how to do this ?

That looks like C# you should be able to convert it or find a tool to do it for you. I would just use the data Interfaces in your code then it works with all of them and just needs a strong typed connection.