diff --git a/RombaSharp/Partials/RombaSharp_Helpers.cs b/RombaSharp/Partials/RombaSharp_Helpers.cs
index e8c5b7be..8656b938 100644
--- a/RombaSharp/Partials/RombaSharp_Helpers.cs
+++ b/RombaSharp/Partials/RombaSharp_Helpers.cs
@@ -4,6 +4,7 @@ using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
+using System.Linq;
 using System.Xml;
 
 namespace SabreTools
@@ -435,6 +436,33 @@ namespace SabreTools
 			}
 		}
 
+		/// <summary>
+		/// Gets all valid DATs that match in the DAT root
+		/// </summary>
+		/// <param name="inputs">List of input strings to check for, presumably file names</param>
+		/// <returns>Dictionary of hash/full path for each of the valid DATs</returns>
+		private static Dictionary<string, string> GetValidDats(List<string> inputs)
+		{
+			// Get a dictionary of filenames that actually exist in the DATRoot, logging which ones are not
+			List<string> datRootDats = Directory.EnumerateFiles(_dats, "*", SearchOption.AllDirectories).ToList().ConvertAll(i => i.ToLowerInvariant());
+			Dictionary<string, string> foundDats = new Dictionary<string, string>();
+			foreach (string input in inputs)
+			{
+				if (datRootDats.Contains(input.ToLowerInvariant()))
+				{
+					string fullpath = Path.GetFullPath(datRootDats[datRootDats.IndexOf(input.ToLowerInvariant())]);
+					string sha1 = FileTools.GetSingleFileInfo(fullpath).HashData.SHA1;
+					foundDats.Add(sha1, fullpath);
+				}
+				else
+				{
+					_logger.Warning("The file '" + input + "' could not be found in the DAT root");
+				}
+			}
+
+			return foundDats;
+		}
+
 		#endregion
 	}
 }
diff --git a/RombaSharp/Partials/RombaSharp_Inits.cs b/RombaSharp/Partials/RombaSharp_Inits.cs
index 446d1379..6cdd4d9f 100644
--- a/RombaSharp/Partials/RombaSharp_Inits.cs
+++ b/RombaSharp/Partials/RombaSharp_Inits.cs
@@ -16,6 +16,11 @@ namespace SabreTools
 		private static void InitArchive(List<string> inputs, bool onlyNeeded)
 		{
 			_logger.User("This feature is not yet implemented: archive");
+
+			// This should use the same thing as something like in SimpleSort, as in scan the archive and scan the files inside equally
+			// Either during or after, we then check against the database to see if there's any matches. If there's no match and
+			// we say onlyNeeded, then don't add it. If there's no match and not onlyNeeded, add it with no DAT hash. If there's a match,
+			// and it doesn't say exists, add it and change the flag. If there's a match and says exists, skip it.
 		}
 
 		/// <summary>
@@ -25,6 +30,12 @@ namespace SabreTools
 		private static void InitBuild(List<string> inputs)
 		{
 			_logger.User("This feature is not yet implemented: build");
+
+			// Verify the filenames
+			Dictionary<string, string> foundDats = GetValidDats(inputs);
+
+			// Now that we have the dictionary, we can loop through and output to a new folder for each
+
 		}
 
 		/// <summary>
@@ -34,6 +45,9 @@ namespace SabreTools
 		private static void InitDiffDat(string newdat)
 		{
 			_logger.User("This feature is not yet implemented: diffdat");
+
+			// First, we want to read in the DAT. Then for each file listed in the DAT, we check if it's in there or not.
+			// If it is in there, we add it to an output DAT. If it's not, we skip. Then we output the DAT.
 		}
 
 		/// <summary>
@@ -63,6 +77,9 @@ namespace SabreTools
 		private static void InitFixdat(List<string> inputs)
 		{
 			_logger.User("This feature is not yet implemented: fixdat");
+
+			// Verify the filenames
+			Dictionary<string, string> foundDats = GetValidDats(inputs);
 		}
 
 		/// <summary>
@@ -81,6 +98,9 @@ namespace SabreTools
 		private static void InitMiss(List<string> inputs)
 		{
 			_logger.User("This feature is not yet implemented: miss");
+
+			// Verify the filenames
+			Dictionary<string, string> foundDats = GetValidDats(inputs);
 		}
 
 		#endregion