Hey Cuong972,
Like what Cyberion asked - which OS are you using? If you are using Windows, then I would suggest what richardc2000 mentioned for you to download - SmartFTP. It is a free FTP program that works really well.
To answer your other question about uploading files in ASCII mode - All FTP programs have buttons on the top of their interface that allows you to either upload your files in ASCII/BINARY/AUTO. It is usually set to AUTO as a default. Just click on the ASCII button before uploading those files to you CGI-BIN to be sure they are being uploaded in ASCII mode.
Feel free to get back to us if you have any further questions/concerns.
Good luck!
-SlickVic78