variable creation

[List User]

I've been using bash for years, and along with a coworker, we could not 
figure out how create and use a variable based on........ err. well 
here's what i'm trying to do.

something like this...

for each in 81 82 83 84 ; do
  IP_${each}=$(nmap -sV -v -v -O 192.168.2.$each)
done

then somehow I want to be able to use $IP_$each but of course bash 
doesn't like this.

Can anyone help me out?

Cheers,
-Todd