SDKROOT -> 3.0, DEPLOYMENT_TARGET -> 2.2.1

Having a nightmare persuading my app to run on both 2.2.1 & 3.0 without hardcoding these settings in three20's xcodeproj
Not quite ready to move to 3.0-only yet...

src/Three20.xcodeproj/project.pbxproj

@@ -775,10 +775,11 @@
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
 				HEADER_SEARCH_PATHS = .;
+				IPHONEOS_DEPLOYMENT_TARGET = 2.2.1;
 				ONLY_ACTIVE_ARCH = YES;
 				OTHER_LDFLAGS = "-ObjC";
 				PREBINDING = NO;
-				SDKROOT = iphonesimulator2.2;
+				SDKROOT = iphoneos3.0;
 			};
 			name = Debug;
 		};
@@ -790,9 +791,10 @@
 				GCC_C_LANGUAGE_STANDARD = c99;
 				GCC_WARN_ABOUT_RETURN_TYPE = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
+				IPHONEOS_DEPLOYMENT_TARGET = 2.2.1;
 				OTHER_LDFLAGS = "-ObjC";
 				PREBINDING = NO;
-				SDKROOT = iphonesimulator2.2;
+				SDKROOT = iphoneos3.0;
 			};
 			name = Release;
 		};