The most important first stage in the design of an information systems project is knowing your client and making sure their wants and company information is portrayed the way they want and envision it to be . I would first research the company history, branding information what their mission statement is etc, I would also set up a brainstorming session with managment to get better understanding what their vision is as well.
The next site for a web based project would be a proposed site map , which would give hierarchy of page and site maps etc .
Design concept would be the next step this is where you would come up with the overall design and look of the page. Everything from do you use company colors in layout what kind of layout and how the overall page layout will look and feel.
With a web based page the coding would be the next process in order to have page go live. What coding are you doing use SQL, Cobalt etc. Once that is established you will be able to have page go live and have the domain name set up.
The last thing I would do is make sure a schedule is set up for maintence of site . If updates etc are needed.