Recommendation for Unique URL

I have an application that does not require a user to log in. But, they do enter their email address and their dept. manager's email address. I want to send an email to the dept. manager that contains a personalized URL so they can click on that and see a page relevant to what the employee entered. What is the best approach to the unique page ID? I thought I would store the dept. mgrs. email address and the session ID in a db, and use the session ID in the URL. Do I even need the mgr's email address? Is another approach better? What have you used? -- Jim Kaufman mailto:jmk@linuxforbusiness.net Linux Evangelist cell: 612-481-9778 public key 0x6D802619 fax: 952-937-9832 http://www.linuxforbusiness.net