So in order:
1. Clone templates in : http://www.yourxoopssite.com/modules/system/admin.php?fct=tplsets
2. Go to the system preferences:
http://www.yourxoopssite.com/modules/system/admin.php?fct=preferences&op=show&confcat_id=1
3. Set fild "Check templates for modifications ?" to "YES"
4. Set field "Default template set" to your template clone (which you did in step 1)
5. After changes redo step 3, and set "Check templates for modifications ?" into "No" for security reasons.
6. Clean cache and templates_c folders on your server.
7. Go into the blocks or templates you want to change and do this. CHanges will be visible after refreshing page.


PS Mboyden "Don't leave home without it." I love this sentence!!!