you'd need a tv tuner card to record stuff off a VCR to Computer, i think. With recording stuff to VCR from computer, it depends on what you wish to record to VCR. There are numerous Copy-Protections involved with movies. But if your recording gameplay or demonstrating somethin in a program then it should be fine.
When having two monitors connected you must have the computer turned off when connecting. Then you need to enable the second monitor. With nvidia cards it usually enabled using nView. ATI cards enable it using the Display tab under Display Settings, Advanced, then you can select which connected monitors you want on or off.