Help to develop a tol to compare two tables in oracle database

Hi,
I am into a software firm,going through training,
as a part of my training project,i decided to develop a tool in VB that will compare the two tables from oracle database.
basically we have two tables from diff database schemas on oracle database.
two tables have same columns but a column in one table may have a diff datatype in other table.so tool should return the columns that have different datatypes.
Once this is done then there are other functionalities that i have to design....


please let me know if nayone is ready to design the same for me,,,

I AM READY TO PAY AS WELL....
its urgent