How do I get/switch to the current directory on another drive??

string curDir;

curDir = Directory.GetCurrentDirectory();

Console.WriteLine("the current directory is {0}", curDir);

Console.WriteLine(@"changing to C:\Documents and Settings\PMBottas");

Directory.SetCurrentDirectory(@"C:\Documents and Settings\PMBottas");

curDir = Directory.GetCurrentDirectory();

Console.WriteLine("the current directory on drive C: is {0}\n", curDir);

Directory.SetCurrentDirectory(@"D:");

curDir = Directory.GetCurrentDirectory();

Console.WriteLine("the current directory on drive D: is {0}", curDir);

Console.WriteLine(@"changing to D:\Documents\All Lessons");

Directory.SetCurrentDirectory(@"D:\Documents\All Lessons");

curDir = Directory.GetCurrentDirectory();

Console.WriteLine("the current directory on drive D: is {0}\n", curDir);

Console.WriteLine("changing back to C:");

Directory.SetCurrentDirectory(@"C:");

curDir = Directory.GetCurrentDirectory();

Console.WriteLine("the current directory on C: is {0}", curDir);

Console.WriteLine("changing back to D:");

Directory.SetCurrentDirectory(@"D:");

curDir = Directory.GetCurrentDirectory();

Console.WriteLine("the current directory on drive d: is {0}\n", curDir);