If you have an HTC EVO 3D and you can't wait to root it, wait no longer. Here's how to use Unrevoked and Alpharev's Revolutionary S-OFF and Recovery tool. It's still in beta, but it works great.
First, find out what version of HBOOT your phone is running. To do that, just power down your phone, press, and hold the Volume Down key and tap the power button to turn it back on. This opens the bootloader. The HBOOT version number will display at the top of the screen.
Next, get your phone's serial number. You'll need to enter it in during this process. Find the serial number on the sticker beneath your battery.
Back up any data on your phone that you want to keep. Rooting a phone wipes it. Then prep the phone by turning on its USB debugging option. Do this on the phone via Settings >> Applications >> Development and checkmark >> USB Debugging.
Next, download revelutionary-0.3pre7.tgz. As this tool downloads, it will prompt you to enter in the phone's serial number and the HBOOT version. Do this right here at the site.
Once you enter your information, the site will give you a beta code. Leave the site up and make a copy of this code for future reference. Put it somewhere safe.
Unzip the contents of the file you downloaded--it's called revolutionary-0.3pre7.tgz. Do this via command line or through a built in archiving tool. Ubuntu uses Archive Manager as the default application for handling .tar.gz files.
Plug in your EVO 3D phone via USB and set it to Charge Only mode. Make sure you're phone is fully charged before you go past this point.
Open up the terminal and go to the directory where you unzipped revolutionary-0.3pre7.tgz. From there, type in: sudo ./revolutionary
Hit Enter. Type in your password when Linux prompts you.
The system now prompts you to enter in the beta code you saved a few steps ago. Just copy and paste it in. Hit Enter and the process begins.