[N!ck]

first, the OR needs to stay "OR".

second, you are correct in changing the "FORUMID1" and "FORUMID2" parts (and you can add more with the same syntax).

third (and i might have misunderstood), what this script does is counts how many threads were posted to in the past 24 hours in the forums you specify.

fourth, the 86400 part is the number of seconds in 24 hours. if you want to change the 24 hours, just do 3600 times the number of hours you desire and replace 86400 with the result.

if i misunderstood what you're looking for, let me know