In my macbook4,1 (early 2008) with 4GB RAM and running OSX Lion, I'm trying to install Windows7 with Bootcamp Assistant 4.0.4 but I get stuck after selecting partition size. It does not detect the windows install disk (DVD) and I can not move forward with partitioning/installation. I've been able to install it in Parallels 8 virtual machine with same installation disk, but want to try bootcamp as I have performance issues when running parallels and other OSX applications. Not sure if issue is OSX version , Bootcamp Assistant version or Macbook model related. Any advise to overcome the situation is welcome.