The following third-party URL seems to offer a manual workaround for what you are looking for:
http://www.inmotionhosting.com/support/website/htaccess/redirect-without-changing-url
Type: Posts; User: sinelogixtech; Keyword(s):
The following third-party URL seems to offer a manual workaround for what you are looking for:
http://www.inmotionhosting.com/support/website/htaccess/redirect-without-changing-url