Virtual Warhammer Tabletop I Tryed To Play Warhammer Online, Unfortunately It Says My Memory Is Too Low?

I tryed to play Warhammer online, unfortunately it says my memory is too low? - virtual warhammer tabletop

I purchased this game today and downloaded. When I finally installed and tryed to play, you quickly jump to a message that says virtual memory is too low, Warhammer will now terminate. To do this, no matter how often I try. What must I do to play the space?