Help please. I ordered something yesterday afternoon. Said it would be shipped Fedex 7 days. So I receive an email this morning from Fedex that said unable to deliver yesterday. What??? But it had a zip file attached to it and I stupidly tried to open it. I have never received not tried to handle a zip file before so all I knew was to double click it. It opened to show me numbers all over the page. What have I done to my Mac? I should have known better but am so scared know. I want to try to check my bank account but am afraid to put those keystrokes into my computer. Please, please give a stupid (older) person some advice as to why to do. Thank you I have a Macbook Pro mid 2012 with the latest Yosemite updates on it.