I think CrzCorvette means you should scan it with GoodN64, and use the GoodWindows frontend to make life easier.
And as for plugins, you are using plugins.. maybe you don't realize it... look in the options somewhere (sorry, I haven't used emulators for a while already, so I forgot).
As for specs, Matata means your computer specs (i.e. processor, graphics card, sound card, memory, etc.)
Edit: You replied before me.. but.. you should use GoodN64 to check if your rom is a [!] rom. It might work if it's not, but will most likely have problems