Hi. I have macBookPro 15''. When i open my applications, they open separately. for example, if i am using safari and decide to open itunes the two doesn't overlap. And i want them to overlap. its annoying when im on aim and skype and i have to click the icon every time when someone talks to me. But i can make the applications open overlapping "holding alt/option key and clicking the application at the same time". but this is really annoying. can someone help me please?