I have a build configuration that is generating the release assemblies of a C# solution. The assembies are zipped with the version number as part of the file name, then all stored in the same directory. These archives are needed as a dependency of a different C# solution. Before building the second solution, I want to get the newst archive zip file and unzip it into a folder that is part of the second solution. What's the best approach to managing these archives and getting the newest one?