hi metatronsl,
As the original website is a CMS system, the content will be saved in the databases(mySQL). So please make a copy of this too.
I can help you retrieve the content from your Mambo files or I can have a look at the word press site and get the information from that.
Aside from being a web developer, I also run a web hosting company, www.rakahost.com. I have dealt with similar issues in the past and I believe that my experience will help you.
If you require any further help, please do not hesitate to contact me.
Kind Regards,
Rehan