CUDA 4.0 & Visual studio 2008

hello Guys, am new to CUDA programming, i have a 32bit window 7 desktop with a NVIDIA GPU. i have install CUDA 4.0 tool kit and the SDK, with Visual studio 2008. but i can get them to work together. what setting do i need to make inorder to be able to write my first CUDA application. thanx any suggestion will be appreciated