When you install SQL Server 7.0, use the same sort order and character set that is used in SQL Server 6.x. (SQL Server Setup chooses this by default if it can connect to the SQL Server 6.x server at the beginning of setup for a one-computer upgrade). If you do not know the character set and sort order used for the SQL Server 6.x installation, run the sp_helpsort system stored procedure against the SQL Server 6.x server.
If you choose a one-computer upgrade, you can start the SQL Server Upgrade Wizard automatically at the end of the installation. Otherwise, you can start the SQL Server Upgrade Wizard manually anytime after the Setup program is complete. If you plan to perform a two-computer upgrade, you cannot use the Windows NT LocalSystem account for the SQL Server services.