Drupal 7.x

I'm using Drupal 7's "File" and "Image" fields to attach images to my nodes. This works very well, I'm especially happy with the ability to attach multiple files/images to a node.

What puzzles me is how to reuse images in several nodes.

Should I simply upload the image again (using the same filename) and Drupal's file handling will recognize this?
I tried adding an association into Drupal's file_usage table by hand, but the image did not appear in the list of images for the node.

Is it possible for a user to finish registering and instead of taking them to the home page or whatever it takes them, manually enter in the website to where you want them to go after registration?

Per this webcast: http://www.youtube.com/watch?v=Bzg26YJi2W8

.. I have followed all the instructions. When I hit "browse server" via ckeditor's image dialogue, I get the following error:

http://dl.dropbox.com/u/15528/ckfinder-error.png

.. which is essentially a "not found" page being loaded into a modal box.

Hello.

I'm trying to figure out the best way to do this:

I just upgraded on of my websites from Drupal 6.20 to Drupal 7, following the upgrade instructions to the letter. The upgrade itself seems to have gone fine, as I a able to get to the admin section (/admin), and no errors came up during the actual install. However, when I try to visit the main, public-facing page, I get a WSOD with the following error message:

Fatal error: [] operator not supported for strings in /home/dtdrupal/stable/includes/common.inc on line 2313

I've tried the following:

I searched for sometime but could not find a way to send mail to all registered users. I shall appreciate if someone could provide tips on how to compose and send email (preferably with capability to send attachment) to all registered users (or those belonging to a particular role) in Drupal 7.