Don,
No silly questions.
If you are happy with MyCommunity 1.0 there is no need to upgrade to 1.1, there are only further performance improvements on Joomla 1.5, and very very minor fixes, which are unnoticeable.
ricky7622,
Only the Joomla template changed, no need to upgrade CB template and module.
To upgrade (if you wish):
- copy-paste / write down params you had in the template settings
- select another template as default
- uninstall MyCommunity 1.0
- install MyCommunity 1.1
- select MyCommunity 1.1 as default
- set params like you had (and set the 2 new params in the way you wish them).