Well it's a mod written for 6.3 so install it under 6.2 at your own risk.
It'll work in 6.2, but the instructions are for 6.3. I just didn't want to retro-write the instructions.
You can try inserting the code from that part of the instructions below the little section that begins:
// Find out if they already have a display preference
I think that'll work.
