mail problem with php as cgi

Hi! I've installed php as cgi (so not as apache module) using cygwin. It works fine except that mail() send to I-don't-know-where. My php.ini is fine with smtp=localhost (I do have a server), sendmail_from= me@localhost, and sendmail_path commented out. But when running phpinfo, I get path to sendmail=usr/lib/sendmail -t. Is the problem there? How to solve it? Thanks in advance Jamphp