Welcome to LQ!
A few quick notes... first, your problem is only "urgent" to yourself. Everyone here volunteers their time and while many are willing to go to extra lengths to help with critical problems when necessary, using an uninformative title such as "urgent" or "help!" provides no information that might attract those with the knowledge you need! So please update the title to something like "Need help installing Zorin" and Zorin users will surely flock to your aid!
Next, please see the forum rules and other helpful pages to make your questions more meaningful. How well others can help depends primarily on the quality of your question and how much information specific to your problem that you provide. I must admit that I do not know what you mean by "POOF! nothing, nothing...". Is nothing downloaded? Is nothing installed? What?
So please take a deep breath, describe what you think should be happening, and what seems to not be happening and any messages visible on your screen. Also, a brief description of the computer, CPU, RAM, current OS, etc. will go a long way!
All of that said, I have no personal familiarity with Zorin so will step aside and wait for someone else to step up to the plate!