Upgrading Driver


I am using CUDA 4.0 on GeForce GTX 560ti on windows 7 and having MS visual studio 2010. When I try to run Parallel Nsight, the error message is that version of driver is incompatible. My driver version is 270.51 while Nsight demands 270.61 version. Should I upgrade it and does upgradation will affect CUDA running on my system. and can anybody recomend me useful tutorial on Parallel Nsight.