Forgive me if this is not the right forum for this question, I couldn't decide which forum was most applicable.
I have recently moved to VS2012 and up until now have used windows environmental variables in my include paths (%DEV% = D:\Dev) this way my partner or others would not necessarily have to keep everything in the same location as long as they had their variables set. Now I'm noticing that IntelliSense is having problems finding those directories. A few searches show that it's been reported but not fixed.
What I really would like to know, is if there is a better way to do this than I've done until now? If our projects need DX, SDL, or other libraries, how do you guys include them in a way that is more friendly for multiple people working on the same project?