I am doing a school project and I uploaded my files for my website but when I go the url supplied in the email all I get is the generic page http://capellaproject.com

capellaproject.com is still using external name servers - you can check this with an online tool like this one for example: https://whois.domaintools.com/capellaproject.com
In order for the domain to become operational from the account, you ned to update its name servers to Freehostia's ones (the name servers you need to use are listed in the 'Hosted Domains' section of the Control Panel of your hosting account). Please note that you need to make the change in your account with your current domain registrar (since capellaproject.com is apparently registered with another provider as well)