I am writing code in VB.NET 2005, my database is SQL Server 2000. I what to wright data in SQL tables using Macedonian Language, when I use this Language I have ???? question mark in table cells. I already have install Macedonian Language in my WIN XP

Have you set the language appropriately in SQL Server? It doesn't matter what you have your client set to, you need to tell SQL Server which language.

SET LANGUAGE language
GO

For example:

SET LANGUAGE Italian
GO

Actually, you may have to uninstall and reinstall SQL Server and install it using the correct language. Look in BOL about using different languages. I don't think you'll be able to change it on the fly.