Theme suggestion or theme overridden I have two template override - user-profile.tpl.php and views-view-fields--myviewname.tpl.php.
To take effect those templates, I had to place them into the default enabled theme.  

The main problem is that I use the default theme "bartik" and I got to place them into "themes/bartik/templates/" to let the drupal theme system know them.
I know it is not a good idea because it is just like hacking. I should use a custom theme or sub-theme from bartik, but I don't want to write any theme.

The only clue is that I have a custom module and I shall put them into that module ( sites/all/modules/mymodule/templates ). Then, I shall make a theme suggestion to let the theme system use them. 

How can I do this or any better idea?
when you create a sub-theme you do not need to create any "new" template, but you can change something from the "main-theme". So try to create a new sub-theme and put that files into sub-theme.

M.