Here are two handy utilities that I have found recently.

WebMon: download from http://www.btinternet.com/~markwell/webmon/

WebMon is a freeware web page update monitoring program - it saves you time and keeps you updated by automatically checking web pages to see if they have changed.

Some of its features include:
Checking an unlimited number of web pages.
Scheduling automatic checking at set intervals.
Optional pop-up alerts and sounds when updates are found.
Selecting which part of the web page to check.
Simple installation and removal.
Freeware, with no advertising or spyware.

And;

NVU: download from http://www.nvu.com/

NVU is a complete and totally free web authoring program to to rival programs like FrontPage and Dreamweaver.