what do you mean appear? make sure to add the appropriate lines to dbstr_us in the EQ client folder otherwise you see that nasty string thing..
Code:
12500^1^Zombie Bash^0
12500^2^Zombie^0
12500^3^Bash^0
12500^4^This ability allows you to bash as a zombie^0
tbh no idea why the 2 and 3 are necessary if they even are... Some seem to have it some dont.
to add via quest is $client->IncrementAA(12500);