url rewriting/redirection

Hi Patrik jonsson, In the scenario 1, I have to add one more thing.. The user type www.abc.com the corresponding internally hosted site is www.xyz.com\abc and user should see www.abc.com on the browser instead of www.xyz.com\abc (as explained before) And there is another set of users, they will type www.def.com the corresponding internally hosted site is www.xyz.com\def and users should see www.def.com on the browser instead of www.xyz.com\def

Similarly I have to publish eight sites, what changes I have to do in the above irule in order to achieving the same. your help will be highly appreciated.