To set aim_agent, you used $Version, which is a variable you my'd earlier, and it is unitialized.
So you should initialize it, if you want to use it.
What they actually suggest you to use is $Net::AOLIM::VERSION, which is the version of your AOLIM package. To use this one, you neither need to declare it, nor to initialize it. Those are done for you in the AOLIM package, so you just use it, it is ready for you.
Thanks for your help, pg. Now I have no errors present on runtime (so it says). The messages I'm trying to send aren't working, but atleast I've got a start on it now.
Maybe I should have worked with perl a while longer before trying to tackle something like this :S.