Hmm.. I haven't used the Northwind sample database in quite a while. Tonight I discovered Northwind and "pubs" are both out of sight and out of mind as far as Microsoft is concerned; they're focusing entirely, 100% on AdventureWorks these days.
So be it, but I needed Northwind. Finding it wasn't particularly easy, and once I ran the .msi I didn't know where it went. Being as I'm using SQL Server 2005, and Northwind's life ended with SQL Server 2000's lifespan, I was worried it installed to nowhere. Turned out it went into a folder in "C:\SQL Server 2000 Sample Databases".
But here, I'm making available the one and only script that you need here: instnwnd.sql