Registered user not see dashboard

hi… right now im using wordpress 2.6. my question is how im gonna do if i want my registered user like ‘contributor’ not go to the dashboard but they can still write a post?? i mean they only write a post or viewing their profile only with my website template not in the dashboard. my website is http://www.kerajaanrakyat.com

i’ve search in the forum before ask this but didnt see the problem exactly like mine. sorry my english kinda sucks