I set up a wbpage using my personal email address for my company. is there a way to change the email addy???

If you mean you entered your address for contact purposes on the page, just edit it. If you used it to register your site with the host, they normally allow you to change your contact details. If you have used it to set your site url, you must keep the pointers to it correct in dns for any one to find it. This means if you change the domain part of the site, you must move the site to whoever hosts the new domain.
I set up a wbpage using my personal email address for my company. is there a way to change the email addy???
i assume you mean the domain name. you need to get access to your domain name. from there you can change the registrant and administrative contact
unique name