web page problem

For my job at a small non-profit organization, I have to build a simple webpage. As I am intermediate with Java and just learning html, it is an interesting experience. I've been able to layout and design the webpage with ease.

However, my boss wants me to make it easy for her to update the page. That is, she doesn't know html and doesn't wish to learn it. How do I go about making it easy for her to update the webpage? I would think I could use a "Log-In" button that takes her to an adminstrator-type site where she perform all the necessary changes. However, I would imagine that html is not the ideal language to implement the "Administrator Functions" in. What language should I look at using? Perl? Php? I'm not very familiar with languages other that Java and Html.

Any suggestions as to how I should go about doing this would be greatly appreciated.

If you could provide a website that details the differences between the most popular web development languages, I would be very appreciative. Thanks.

PS I also posted this in the Software section, but due to low traffic in that section, I moved it here.

'Intelligent humor is all well and fine, but people laugh harder at dirty jokes' - John Lithgow