I am Configuring ASP.NET 2.0 Application Services to use SQL Server 2000 (or SQL Server 2005) and I found that the utility provided by the framework 2.0 and described in the book Chapter 4 page 126 (on the top) as "aspnet_sql.exe" in reality is called "aspnet_regsql.exe". Maybe an earlier version of this utility had the first name.
The whole path (on my machine) is: C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspn et_regsql.exe and also I found the utility was unable to connect to my Sql server 2000 by using Sql Server authentication, so I used another Sql server 2000 using windows authentication to generate the DB objects and after this I create an script to create this objects in my real DB server.
A complementary good blog for this Application Service is:
Note. Let me know if anybody needs the sql script.