change htaccess.txt to .htaccess

HI,

I don't know what happen once i change htaccess.txt to .htaccess. I got problem to log in my admin, found error below. Its anyone can help on this?

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, webmaster@mfg-biz.com and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
Apache/2.2.14 (Unix) mod_ssl/2.2.14 OpenSSL/0.9.8m DAV/2 mod_fcgid/2.3.5 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 Server at www.mfg-biz.com Port 80

Do you have your shop in a subdirectory?

If yes, you must insert the name like this:

RewriteBase /oc-shop/

Thank you. I already add in. Its work.