I would like to have framed texts with an Icon on the side like the ones here http://www.centos.org/docs/5/html/5.5/Release_Notes/ar01s06.html or http://hgbook.red-bean.com/read/collaborating-with-other-people.html
these text boxes are helping to emphsize text, and hg book has really nice frames around code ! which are nicer than the simple code frames I use now.
So far I found The mdframed package as a candidate for that, but the question is how do I insert the tiny image in the side, and define internal margin ?
Can someone give a code snippet ?
** Also, another question, I love Latex, but I am thinking the following: Since I want to publish my book online, it does make sense just to download the code of the hgbook, and learn the syntax of that XML ? would latex give me more advandages ?

tikzis probably your best pick to make these boxes. As for publishing online, do you mean self-publishing (createspace, lulu, etc.)? If that is the case, what is wrong with LaTeX and self-publishing? – raphink Apr 20 '11 at 07:27