For analysis of the data you should consider using the code from the The R Project for Statistical Computing. R is `GNU S', a freely available language and environment for statistical computing and graphics which provides a wide variety of statistical and graphical techniques: linear and nonlinear modelling, statistical tests, time series analysis, classification, clustering, etc.

For the analysis of your survey you may want to use a classification and regression tree. This allows you to put your users into different categories and still do statistics. There is a contributed R module called Pinktoe, which is a piece of S code that will automatically turn a classification and regression tree into a set of HTML and perl files.

There is even a site called CRAN, The Comprehensive R Archive Network that is like a CPAN for R.

Your database-update idea sounds like it could save you lots of work. However, if you are going to allow the a CGI script to create new database tables, you should use some sort of authentication such as a password field to access this capability. Otherwise, people can play with the values that they submit and mess up your database.

It should work perfectly the first time! - toma