Install for Windows

Hello, I'm trying to install php4 onto my computer. My boot drive and the Cygwin is installed in F drive. I've tried the quick install and it didn't work. Therefore, I've been working on the manual installation. I'm on the second last step where I compile the php4ts.dsp. It's giving me the following error: --------------------Configuration: ZendTS - Win32 Debug_TS-------------------- Performing Custom Build Step on ".\zend_language_parser.y" 'bison' is not recognized as an internal or external command, operable program or batch file. Error executing f:\winnt\system32\cmd.exe. php.exe - 1 error(s), 0 warning(s) Please advise how I can fix this so I can complete the installation. Regards, May