[loudent2]

you can use an SQL command to do it. Find out what the field name of aggroradius is(we'll assume aggroradius for this example) and the NPC table we'll assume npc and fire up mysql and type(replace the x with a number)

use eq;

Update eq.npc set aggroradius = x;

If that doesn't work try adding a where clause

Update eq.npc set aggroradius = x where *;

if that doesn't work then brush up on you SQL and figure out how to do an update(I haven't worked with SQL in some time).