is there something for me to download or something? because my dad was going to help me install a printer on my macbook but he cant since my macbook wont open .exe :( help?

You can't. End of story.

You need to find drivers, for mac.

Kill your dad for me.

What model printer is it?

Your Mac probably already has drivers for your printer, or can easily add them. Try adding your printer through the Printer control panel in System Preferences (Apple Menu -> System Preferences -> Print & Fax). There's a handy utility there that'll walk you through the process of adding a printer.