Guide to x.org update?

[Your Name]

I'd like to upgrade to the x.org series from XFree86.
Is there any simple guide to how to do this? There's 
nothing in /usr/ports/UPDATING. I see that some people
have reported general success, but I'm worried that 
I'll miss something or forget about rebuilding
something in the three days it'll take to rebuild
every X dependent
port on my system.

Jen

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