How can I reorder aplications and other login items on OS X 10.6 since System Preferences doesn't give us that power.
You can in fact reorder
Now drag App 2 anywhere in the list, insertion marker is at the bottom.
Now drag App 3 anywhere in the list, insertion marker is at the bottom.
I believe that all items in Login Items are launched simultaneously, at least in 10.4 & 10.5 (I run PPC so I don't know about 10.6). What I did to get items to launch in the order I want, and to pause inbetween so as to prevent locking up when all items launch at once, was to write an AppleScript in Script Editor which looks like this:
I then put the script in Login Items. Delays are in seconds.