I don't know what is your project with VS , but as you are a windows user i can help you .
But never more with another thing than the 0.5.1 rc1 from tag
I spent hours to try to build Vegastrike , and the only version working out of the box for windows && VC9 is :
https://sourceforge.net/p/vegastrikevo/ ... _0_5_1_r1/
It's my fork , you can find the original in the VS svn too .
But i would be happy to have a tester for Vegastrike evolved repositery .
Anyway , you just need to checkout Data,vegastrike,vega-vc9 and win32 (or win64).
I have winXP sp3 and so i use win32 .
If you have vista or 7 and more use win64
You must copy the dll from win32/bin inside Data to run the game .
EDIT : In fact i mean grab all the files in win32 and paste idem in Data .
If you have MSVC2010 or > , launch the vc9 solution , 2010-2012 will make an updated project for you .
Good luck .