I have a client who wants to stop using their current custom made site and start using a wordpress site. Short of 'migrating' the site, is there any other way to do this? For example, if I started simply building a wordpress site for them with all of their information on it, and then mapped the domain name of the current site onto this new wordpress site, would that not work? I'm hoping there's a relatively simple solution here. I'm fine with rebuilding the site and all its content, so I'm not worried about losing information or having to start from scratch.
Secondly, there is a member portal attached to the site (the url is portal.theirurl.com) which is managed by a portal management company. Would wordpress support this function? I don't need to change the portal, I just need to make sure that the site can link to it and that there can be a 'join/login' button which will lead to the portal page.
Any help is appreciated!!