Problem with .htaccess interspire webpublisher CMS

I have a problem with the .htaccess file on a server running Interspire Webpublisher The CMS is installed but the inner pages use search engine friendly URLs and the inner pages don't show. Problem seems to be in the .htaccess file from reading articles... but I have loaded a working .htaccess file from another site that uses the same CMS on the same server hosting company. But this one wont correct the error. 404 error It may be that I am using a staging address with an IP address. If this is your bag... the bid.