File-Edit and you start editing the current page. Also teaches them to use an alternative web browser and email client, kill three birds with one stone. :)
Some others I found:
[link|http://www.evrsoft.com/1stpage2.shtml|http://www.evrsoft.com/1stpage2.shtml]
[link|http://webpage.vendercom.com/|http://webpage.vendercom.com/]
[link|http://www.w3.org/Amaya/Amaya.html|http://www.w3.org/Amaya/Amaya.html]
[link|http://www.flfsoft.com/HTMLBuilder.html|http://www.flfsoft.com/HTMLBuilder.html]
More:
[link|http://download.com.com/3150-2048-0-1-1.html?legacy=cnet|http://download.com.....html?legacy=cnet]
Take your pick, I reconmend Mozilla because obviously you have experience with it.