search companion ignoring certain files   

Windows XP

I have a directory with various text files.  Some named .txt, some .sql, 
some .bat, but all are plain text and edited with notepad.

I drill down to that folder and open the search tool to locate all the files 
in the folder that contain a given text string, the files with the .sql 
extension are not searched.  I confirmed that was the behavior by making a 
copy of one of the .sql files (say, foobar.sql) and renaming the copy to 
foobar.txt.  Now I have two identical files that vary only in the name of the 
file extension.  Execute the search and it only returns the foobar.txt.

Also, and don't know if this is related, but I have installed SQL Server 
client, which registered *.sql as belonging to it.  I'd like to undo that, as 
many (most) of my *.sql files are for use on other dbms - not SQL Server.  
Given my mixed dbms environment, I want to treat all *.sql files as if they 
were *.txt

date: Wed, 1 Jul 2009 10:56:01 -0700   author:   EdStevens