This should be a simple thing to resolve, but I just can't figure it
out. :)

You should be able to use "isql -i file.sql" to run isql in batch
mode and process the sql commands found in file.sql.

However, when I try this, I get the message below:

C:\fbdata>isql foo2.fdb -i t.sql
Expected end of statement, encountered EOF

What am I forgetting?

Contents of t.sql:
C:\fbdata>cat t.sql
create table t (i integer, c char(10) );
commit;
exit;
C:\fbdata>