Like other posters said, it's a generally difficult problem. I would break the problem down into subsections and estimate each, depending on my experience. e.

Like other posters said, it's a generally difficult problem. I would break the problem down into subsections and estimate each, depending on my experience. e.g. database setup and connectivity - one day +/- one day, I do that all the time. graphic design of final site... 4 weeks +/- 4 weeks.