Everything seems to have worked perfectly for me 1st time through. Says a lot about how thorough this guide is, because I'm so noob I don't even really know what I can do now that I've done this lol. If I'm right you can start rooting/flashing ROMs after this, right?
edit: I should note there seem to be a few differences to the process. When you click the link to go to Android SDK, it's now android-sdk_r12-windows.zip instead of r11. I used the other link you gave to directly get the r11 anyways since I wanted to stick as closely to the guide as possible. Another is that "Android SDK Platform-tools, revision 5" is now revision 6 and there's 13 files instead of 12. The last difference for me was when it said "Your device is ready to use" I didn't have the last line where it says "HTC Android Phone USB Device". I assume the r12 vs. r11 and revision 5 vs. revision 6 are no big deal, but is the fact that it didn't say HTC Android Phone USB Device Ready to Use a big deal? My device came up in the command prompt at the end exactly like in the screenshot of the OP.