This would be a very easy script to do. If you are working from a dynamic drop-down list (it changes), then you will either need a database or a file containing the information that is needed to be in it.
If it's static, then just put it in an HTML file and set the form's action to the PHP script.
The PHP script needs to read the data from the form and then output a page based on this information. Assuming this information is also dynamic, it will have to read either a file or a database. You can search the database for information about the person by using their name.
SELECT * FROM people WHERE name=$namefromform
If you are using a file instead, you'll have to just include the file:
include($namefromform.".txt"); // this opens information from a .txt file, but it can be anything
If you are getting information from the form via POST, you'll need to use $POST["namefromform"] or, if you're using GET, $GET["namefromform"], where "namefromform" is the name of the field in the form.
Hope this helps. By the way, it's against the rules to offer jobs on here, I believe. There are many sites you can look at for job offerings. Check out PHP.net's link site.