The indexed views have a rather long list of limitations regarding their creation. Please refer to Books On Line, Designing And Implementing Views, these are few first lines:

"

A view must meet the following requirements before you can create a clustered index on it:

The ANSI_NULLS and QUOTED_IDENTIFIER options must have been set to ON when the CREATE VIEW statement was executed. The OBJECTPROPERTY function reports this for views through the ExecIsAnsiNullsOn or ExecIsQuotedIdentOn properties.

The ANSI_NULLS option must have been set to ON for the execution of all CREATE TABLE statements that create tables referenced by the view.

The view must not reference any other views, only base tables.

"

So, indexed view must select from tables, it must not select from other views.

Regards

Piotr