Okay, I am about to hack my wii....

One of the step I am confused with though...
Press the SD card icon (for the SD menu). This is different from the last version. Then insert the card. It should either pop up Load boot.dol/elf? or freeze.
So what do I do if it freezes, it says on the next few steps to download another file...But what do I do before that. Do I close my wii when it freezes? What do I do?