Custom permalink URL

Hi There

I’m running wordpress via reverse proxy to appear on a different domain, for example..

wordpress installation: http://www.site-one.com/blog/
accessable via: http://www.site-two.com/blog/

I managed to update the ‘guid’ for the post tile using a plugin that allows the entry title to be updated – this works fine, but I can’t get the leave a reply, and posted on links to update, does anyone have expereince with this or able to point me in the right direction?

Thanks in advance