I don't have the right HBOOT version, can I still install Cyangenmod? I ran adb reboot bootloader on my HTC Sensation XE and it states that the version is 1.29.0000

According to the wiki I must have version 1.17.0006, .0008, .0011 and .0012, 1.18.0000?
No you can't install a CM Rom without having the correct bootloader. You will brick your device or end up bootlooping it.

Download and flash correct HBOOT, then continue with your choice of Rom.



as per your wiki link

"Pay close attention to the HBOOT revision as newer updates break the tool's ability to work properly"