12-09-2006, 06:52 AM
1. Black Arrows appear under Applications that are currently running
. In OSX, an application can be running without any window being open. Some apps don't run without an open window, though, like iPhoto. It shuts down completely if you close the window. Others, like iTunes, keep running. To quit an application, click it's icon and go to the menu and quit, or press Command + Q (Command is the Apple button).
2. Messaging for Mac
For general use, I recommend Adium www.adiumx.com
. It handles all common protocols like MSN, AIM, Yahoo and ICQ.
For Webcam chatting, use aMSN
For Voice chatting, you'll have to use Skype (requires Skype accounts between talking partners) or iChat (requires AIM or .mac accounts between talking partners).
3. If you just tell us what you're trying to replace, we'll be glad to show you our recommendations of Mac equivalents. As told above, there's always Apple's own list of software on apple.com .