Virtual camera

hi all:) I am new there. My friend is making real time audio/music performance and He need something to capture screen.
I thought about vvvv and screenshot.
I though that it was the faster ways.
vvvv is connected directly to directx, isn’t it?No unnecessary ballast.
It is good idea?
Maybe there is another better way?
What do when i used screenshot node? How make from that virtual camera?

i like fraps.

It is everythings?I can’t imagine there is not person who tried do something similar which vvvv.Anyway thanks for reply:)eventually it will be fraps:)

what velcrome said. fraps is the defacto standard for capturing realtime stuff on pc. if the performance is not right for your friend he/she could always use an external solution…