Hi,
I am working on a finance project and need to get quotes from Yahoo Finance based on the Symbols available in a external file... say symbols.php

It has symbols in the following fashion
Code:
Microsoft
Google
Apple
Wallmart
.
.
.
Bell
When I include this symbols file in my parsing script I need to send query as
PHP Code:
http://yahoo.com/?s=<symbol1,symbol2... > 
My requirement is to append the list from symbols.php make it in a csv format like Google,Apple.Wallmart,Bell

so the query constructs as
HTML Code:
[CODE]http://yahoo.com/?s=Google,Apple.Wallmart,Bell[/CODE]
How do I perform this required task?