Originally Posted by forrestcupp
More than likely it's because you have an onboard video chip that uses 8 megs of shared memory.
If that's the case, the only way to install AIM is to get more RAM. But you could try Pidgin, like they said.
That would be my guess. Is it a laptop? Run CPU-Z to see what speed ram it is. I might be able to sell you some I have.