I would like this for search engine purposes (as well to improve my ability to analyze web traffic - hard to make sense of page numbers).
Can anyopne recommend an extension to help with this?
and #2) I am concerned that when I implement the extension external links I have coming to our website will break, so I would like the existing link structure to still work. How can I do this?
How will this affect our existing links, and any external links that people have created linking back to our website?
I want to switch, but I don't want to lose what we've already built.
Hmmm, im not sure if it will translate those links but I would not see why not. Do a test locally and see if the /content/view links translate in your browser to the new ones.
Would pay to install a sef url extention but save your old urls first - Then direct them to the new url extention (made via the sef component) by using the above code in your .htaccess file