When you need to redirect a visitors to different pages depening on a value from a cookie you can use this code:
RewriteCond %{HTTP_HOST} ^mydomain.com$RewriteCond %{HTTP_COOKIE} !MyDomainCookieRewriteRule ^/$ /first-page.htm [R=301,L]RewriteCond %{HTTP_HOST} ^mydomain.com$RewriteCond %{HTTP_COOKIE} MyDomainCookie=Value1RewriteRule ^/$ /second-page.htm [R=301,L]RewriteCond %{HTTP_HOST} ^mydomain.com$RewriteCond %{HTTP_COOKIE} MyDomainCookie=Value2RewriteRule ^/$ /third-page.htm [R=301,L]RewriteCond %{HTTP_HOST} ^mydomain.com$ RewriteCond %{HTTP_COOKIE} !MyDomainCookie RewriteRule ^/$ /first-page.htm [R=301,L] RewriteCond %{HTTP_HOST} ^mydomain.com$ RewriteCond %{HTTP_COOKIE} MyDomainCookie=Value1 RewriteRule ^/$ /second-page.htm [R=301,L] RewriteCond %{HTTP_HOST} ^mydomain.com$ RewriteCond %{HTTP_COOKIE} MyDomainCookie=Value2 RewriteRule ^/$ /third-page.htm [R=301,L]