Question about custom Roms

[airibis]

(Mods please move this to TP, or TP Upgrades; was posting tired again and didnt realize I was in PPC Software; sorry and thank you)



(I know this most likely belongs under "TP Upgrades; however it seems that forums is dedicated for post containing actual upgrading files.. i merely have a question)


I have been looking over all the guides on how to unlock and flash ones TP; but all of the big huge WARNING signs are kinda scaring me away.


The last thing I would like to do is brick my phone (I assume the same goes for everyone)


So my question is, is flashing ones phone really as risky as they claim it to be; meaning.. if I follow all of the steps and guides will I still be at risk of bricking my phone?


It seems everyone is doing it, and seeing great results.



Also, is it as simple as upgrading your phone using an official installer, or is there more registry work/ coding behind it?