Windows binaries for 4.0.1pl2 does not run mcrypt_* functions. I have been able to get Apache on Linux 2.2 working using the --mcrypt at compile time.

Do the current binaries have mcrypt compiled in them or do I need to compile my own version?

SCRIPT:
$test = mcrypt_cbc(BLOWFISH-448, "1234", "Hello", MCRYPT_ENCRYPT);

ERROR:
Fatal error: Call to undefined function: mcrypt_cbc() in D:\<my document folder>\index.php4 on line 1