default action in Windows Explorer

We just got a new computer at work and although it has the same OS as the old one (Vista Home Premium 64-bit) Windows Explorer acts differently.
In the past when I would highlight a file and drag it over to a folder in the left hand side column it would automatically know to move it to this new location. Now all it does is copy the selected file to the new location. How can I set this to move instead of copy?

Hello Squa, and welcome to Vista Forums.

It cannot be changed, but perhaps adding "Copy To Folder" and "Move To Folder" to the context menu may make it easier to do instead.

http://www.vistax64.com/tutorials/89196-context-menu-add-copy-folder-move-folder.html

Hope this helps,
Shawn