Internet Site with forum

We will need an Internet site with a forum where people can signup and become a member. The signup process will need to be fully automatic. Members will be able to upload documents on the forum that we can download after. There will need to be a "Make Donation" link on the Homepage where visitors can make a donation via PayPal. There will need to be pages for: - Homepage - About - Forum - Useful - Contact We will need to give the site as much exposure as possible using search engines including Google and others.