I checked it out, you are right, isn't there. guide says this though, "1.go to the htc website:HTCdev - Unlock Bootloader
2.the very far right there should be a drop down menu. scroll all the way down to the bottom until you see "All Other Supported Models". do not select the evo 4g(korean). that is an entirely different phone.
3.just follow the steps. and use the files that you downloaded earlier when asked.
4.you will then get an email and follow directions according to the email. "
So I guess you are to choose the "All Other Supported Models" option.
edit: Ha, my turn to get ninja'd
4 freakin times, no less!