Thanks for the advise and comments, I have downloaded a trial copy of Lightroom 3.6. Unfortunately, the latest LR4 won't run on Windows XP which is the operating system that I'm using (and prefer to keep due to some hardware dependencies - e.g. my film scanner).
I've used RAW (Nikon NEF) with my Nikon D90, but don't really get into using a RAW converter for many of my photos. I'm planning to generally set the QUAL setting on my D7000 for .jpg Fine and RAW and will save the RAW files in a separate folder to use as I wish for further manipulations.