tedster - 9:29 am on Feb 19, 2011 (gmt 0)
If you mess up your htaccess file you may waste more than a few days - you may really trash your site.
I strongly urge you to take personal responsibility for this and not ask others to assume it for you. You can ask questions on the Apache Forum - good people will help you. And what you learn will be yours to know and use for the rest of our life.
There is also a helpful thread in the Hot Topics area [webmasterworld.com], which is always pinned to the top of this forum's index page. See Merging www.example.com/ and www.example.com/index.htm [webmasterworld.com]