there isnt a lot of WYSIWYG editors about for linux im afraid but give this a whirl works a treat on ubuntu
get your terminal and do the following
Open a terminal and enter the following lines exactly. If the line does not begin with “sudo” don’t add “sudo”…. just put it in as you see it here:
wget -q -O – http://archive.getdeb.net/getdeb-archive.key | sudo apt-key add –
sudo sh -c ‘echo “deb http://archive.getdeb.net/ubuntu precise-getdeb apps” >> /etc/apt/sources.list.d/getdeb.list’
sudo apt-get update && sudo apt-get install bluegriffon