[support] Clean URL's

hi all, I wanted to enable clean urls in my drupal installation ,but unfortunately when i run the check for it i get a 404 error. my host has enabled mod_rewrite . am i missing somethin ? -- thanks taggy http://theyagar.info ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ S.Theyagarajan Under Graduate Department Of Computer Science And Engineering National Institute Of Technology , Trichirapalli India 620015