Very basic question sorry, what is EQEmu ?

[Thor]

Thanks for replying

Can I use it one PC at home, and log into it from my
other PC, thats networked to it ? Also, does it mess
with any files used online that Verant could tell that
ive used 3rd part software, as I have 55+ chars on
EQ that I dont want to jeopardise.

I want to use it so my 10 year old son can have a
play to get used to it, without the hastle of other
people annoying him or training onto him ??

Thanks, Thor.