diff --git a/OpenRa.Game/GameRules/UnitInfo.cs b/OpenRa.Game/GameRules/UnitInfo.cs
index ff695d485a..45d9c14ea3 100755
--- a/OpenRa.Game/GameRules/UnitInfo.cs
+++ b/OpenRa.Game/GameRules/UnitInfo.cs
@@ -19,6 +19,7 @@ namespace OpenRa.Game.GameRules
 		}
 
 		public readonly string Name;
+		public readonly string Description = "";
 
 		public readonly int Ammo = -1;
 		public readonly ArmorType Armor = ArmorType.none;
diff --git a/OpenRa.Game/MainWindow.cs b/OpenRa.Game/MainWindow.cs
old mode 100644
new mode 100755
index 51a717543c..9d377ae42a
--- a/OpenRa.Game/MainWindow.cs
+++ b/OpenRa.Game/MainWindow.cs
@@ -62,7 +62,7 @@ using System.Runtime.InteropServices;
 			game.world.Add( jeep );
 			var tank = new Actor( "3tnk", new int2( 12, 7 ), game.players[ 1 ] );
 			game.world.Add( tank );
-			tank.traits.Get<Traits.AttackTurreted>().target = jeep;
+			//tank.traits.Get<Traits.AttackTurreted>().target = jeep;
 
 			sidebar = new Sidebar(renderer, game);
 
diff --git a/OpenRa.Game/Sidebar.cs b/OpenRa.Game/Sidebar.cs
index f26ae57215..4c669f3617 100644
--- a/OpenRa.Game/Sidebar.cs
+++ b/OpenRa.Game/Sidebar.cs
@@ -66,8 +66,9 @@ namespace OpenRa.Game
 
 		void LoadSprites(string filename)
 		{
-			foreach (string line in Util.ReadAllLines(FileSystem.Open(filename)))
+			foreach (string l in Util.ReadAllLines(FileSystem.Open(filename)))
 			{
+				var line = l.ToLowerInvariant();
 				string key = line.Substring(0, line.IndexOf(','));
 				int secondComma = line.IndexOf(',', line.IndexOf(',') + 1);
 				string group = line.Substring(secondComma + 1, line.Length - secondComma - 1);
diff --git a/OpenRa.Game/TechTree/Item.cs b/OpenRa.Game/TechTree/Item.cs
old mode 100644
new mode 100755
index bc4b99a2c8..10211a8c21
--- a/OpenRa.Game/TechTree/Item.cs
+++ b/OpenRa.Game/TechTree/Item.cs
@@ -2,6 +2,7 @@ using System;
 using System.Collections.Generic;
 using OpenRa.FileFormats;
 using OpenRa.Game.GameRules;
+using System.Diagnostics;
 
 namespace OpenRa.TechTree
 {
@@ -11,10 +12,10 @@ namespace OpenRa.TechTree
 
 		public bool IsStructure { get { return isStructure; } }
 
-		public Item(string tag, string friendlyName, UnitInfo unitInfo, bool isStructure)
+		public Item(string tag, UnitInfo unitInfo, bool isStructure)
 		{
 			this.tag = tag;
-			this.friendlyName = friendlyName;
+			this.friendlyName = unitInfo.Description;
 			this.isStructure = isStructure;
 
 			owner = ParseOwner(unitInfo.Owner, unitInfo.DoubleOwned);
@@ -40,38 +41,40 @@ namespace OpenRa.TechTree
 
 		static Tuple<string[],string[]> ParsePrerequisites(string prerequisites, string tag)
 		{
-			List<string> allied = new List<string>(prerequisites.ToUpper().Split(
+			Debug.WriteLine( tag );
+			List<string> allied = new List<string>(prerequisites.ToLowerInvariant().Split(
 				new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries));
 
 			List<string> soviet = new List<string>(allied);
 
-			if (allied.Remove("STEK"))
-				allied.Add("ATEK");
+			if (allied.Remove("stek"))
+				allied.Add("atek");
 
-			if (soviet.Remove("ATEK"))
-				soviet.Add("STEK");
+			if (soviet.Remove("atek"))
+				soviet.Add("stek");
 
-			if (soviet.Remove("TENT"))
-				soviet.Add("BARR");
+			if (soviet.Remove("tent"))
+				soviet.Add("barr");
 
-			if (allied.Remove("BARR"))
-				allied.Add("TENT");
+			if (allied.Remove("barr"))
+				allied.Add("tent");
 
-			if ((tag.Length == 2 && tag[0] == 'E') || tag == "MEDI" || tag == "THF" || tag == "SPY")
+			// TODO: rewrite this based on "InfantryTypes" in units.ini
+			if ((tag.Length == 2 && tag[0] == 'e') || tag == "medi" || tag == "thf" || tag == "spy")
 			{
-				if (!allied.Contains("TENT"))
-					allied.Add("TENT");
-				if (!soviet.Contains("BARR"))
-					soviet.Add("BARR");
+				if (!allied.Contains("tent"))
+					allied.Add("tent");
+				if (!soviet.Contains("barr"))
+					soviet.Add("barr");
 			}
 
-			if (tag == "LST")
+			if (tag == "lst")
 			{
-				if (!soviet.Contains("SPEN"))
-					soviet.Add("SPEN");
+				if (!soviet.Contains("spen"))
+					soviet.Add("spen");
 
-				if (!allied.Contains("SYRD"))
-					allied.Add("SYRD");
+				if (!allied.Contains("syrd"))
+					allied.Add("syrd");
 			}
 
 			return new Tuple<string[], string[]>(
diff --git a/OpenRa.Game/TechTree/TechTree.cs b/OpenRa.Game/TechTree/TechTree.cs
index 50ab7ae9f7..d044210212 100644
--- a/OpenRa.Game/TechTree/TechTree.cs
+++ b/OpenRa.Game/TechTree/TechTree.cs
@@ -54,13 +54,13 @@ namespace OpenRa.TechTree
 				.Concat( Lines( "infantry.txt", false ) );
 
             foreach (Tuple<string, string, bool> p in definitions)
-				objects.Add(p.a, new Item(p.a, p.b, Rules.UnitInfo[p.a], p.c));
+				objects.Add(p.a.ToLowerInvariant(), new Item(p.a.ToLowerInvariant(), Rules.UnitInfo[p.a.ToLowerInvariant()], p.c));
 		}
 
 		public bool Build(string key, bool force)
 		{
 			if( string.IsNullOrEmpty( key ) ) return false;
-			key = key.ToUpperInvariant();
+			key = key.ToLowerInvariant();
 			Item b = objects[ key ];
 			if (!force && !b.CanBuild) return false;
 			built.Add(key);
@@ -75,7 +75,7 @@ namespace OpenRa.TechTree
 
 		public bool Unbuild(string key)
 		{
-			key = key.ToUpperInvariant();
+			key = key.ToLowerInvariant();
 			Item b = objects[key];
 			if (!built.Contains(key)) return false;
 			built.Remove(key);