mail send help

[spider0176]

hi,
I have php running under ISS 5.1 and I can't send mails from localhost, the following error message appears:

Server Error in E:\My Docs\scripts\mailers\testmail.php on line 39,
that's the line where mail() function located, I checked out my php.ini and it seems ok:

[mail function]
; For Win32 only.
SMTP = localhost ; for Win32 only (I tried my local IP too)

; For Win32 only.
sendmail_from = [e-mail] ; for Win32 only

; For Unix only. You may supply arguments as well (default: 'sendmail -t -i').
;sendmail_path =

Any ideas?
thanks

[Anon]

Are you shure you have an SMTP server running on your machine. If so check the SMTP server's configuration, and make shure it is running as localhost.