turn off phone
take out battery
insert battery and back cover
press volume down and power

you will see something like S-OFF or S-ON

you can also see hboot version. write that down if you want to use revolutionary to s-off your device.

that means your phone is s-on, with locked bootloader. you can s-off and root your phone unofficially (via revolutionary) or official unlock by htc.

for more info on unlocking bootloader (s-off) and rooting, please refer to 3rd post in 1st page.

result is the same, as in once you achieve s-off and root, you can flash custom rom.

the only different is that official unlock, you're agree to void your warranty and that is declared to HTC prior officially unlock your bootloader. if you unlock unofficially, you can revert back to stock rom and s-on for warranty purpose.

Lol bro, guess i'm on the same ship as u, XE & 2x in da hand. 

I'm using both, so far so good. 

Well, i'm on stock for both, so far so good thou, more to gaming then modding.