Как сделать чтобы параллельно два foreach выполнялись?

 RegistryKey key = Registry.CurrentUser.CreateSubKey(@"Software\IvoSoft\ClassicStartMenu"); RegistryKey key1 = Registry.CurrentUser.CreateSubKey(@"Software\IvoSoft\ClassicStartMenu\Settings");
            ArrayList lis = new ArrayList() { "LastProgramsTime", "OldItems", "CSettingsDlg", "ItemRanks", "ShowedStyle2" };
            ArrayList lis1 = new ArrayList() { 132178679733763807, new byte[] { }, new byte[] { 0x5b, 0x02, 0x00, 0x00, 0xf6, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xcf, 0x0d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, new byte[] { 0x48, 0x53, 0x4C, 0x43, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, 0x00000001 };
            foreach (string m in lis) foreach (object g in lis1) key.SetValue(m, g);
            ArrayList list = new ArrayList() { "AeroGlass", "AutoStart", "CheckWinUpdates", "DisablePinExt", "DragHideDelay", "EnableDragDrop", "EnableExplorer", "EnableStartButton", "FontSmoothing", "HighlightNew", "Hover", "InfotipDelay", "InvertMetroIcons", "LargeIconSize", "MaxJumplists", "MaxRecentDocuments", "MenuDelay", "MenuFadeSpeed", "MenuItems7", "MenuStyle", "RecentPrograms", "SearchPrograms", "SearchTrack", "ShiftRight", "ShowNewFolder", "SkinOptionsW7", "SkinVariationW7", "SkinW7", "SkipMetro", "SmallIconSize", "SplitMenuDelay", "StartButtonType", "StartScreenShortcut", "SubMenuAnimationAlways", "SubMenuAnimationSpeed", "Version", "WinKey" };
            ArrayList list1 = new ArrayList() { 0x00000000, 0x00000001, 0x00000000, 0x00000001, 0x00000014, 0x00000001, 0x00000000, 0x00000000, "ClearType", 0x00000000, "Nothing", "20,2000", 0x00000000, 0x0000000e, 0x0000000c, 0x00000000, 0x00000014, 0x00000014, new string[] { "Item1.Command=user_files", "Item1.Settings=ITEM_DISABLED", "Item2.Command=apps", "Item2.Label=$Menu.Apps", "Item2.Icon=,2", "Item2.Settings=TRACK_RECENT|ITEM_DISABLED", "Item3.Command=user_pictures", "Item3.Settings=ITEM_DISABLED", "Item4.Command=user_music", "Item4.Settings=ITEM_DISABLED", "Item5.Command=user_videos", "Item5.Settings=ITEM_DISABLED", "Item6.Command=downloads", "Item6.Settings=ITEM_DISABLED", "Item7.Command=homegroup", "Item7.Settings=ITEM_DISABLED", "Item8.Command=separator", "Item9.Command=games", "Item9.Settings=TRACK_RECENT|ITEM_DISABLED", "Item10.Command=favorites", "Item10.Settings=ITEM_DISABLED", "Item11.Command=recent_documents", "Item11.Settings=ITEM_DISABLED", "Item12.Command=computer", "Item12.Settings=NOEXPAND", "Item13.Command=network", "Item13.Settings=ITEM_DISABLED", "Item14.Command=control_panel", "Item14.Settings=TRACK_RECENT", "Item15.Command=separator", "Item16.Command=network_connections", "Item16.Settings=NOEXPAND", "Item17.Command=admin", "Item17.Settings=TRACK_RECENT|ITEM_DISABLED", "Item18.Command=devices", "Item18.Settings=ITEM_DISABLED", "Item19.Command=defaults", "Item19.Settings=ITEM_DISABLED", "Item20.Command=help", "Item20.Settings=ITEM_DISABLED", "Item21.Command=run", "Item22.Command=apps", "Item22.Settings=ITEM_DISABLED", "Item23.Command=windows_security", "Item23.Settings=ITEM_DISABLED" }, "Win7", "None", 0x00000001, 0x00000000, 0x00000001, 0x00000000, new string[] { "USER_IMAGE=0", "SMALL_ICONS=1", "LARGE_FONT=0", "DISABLE_MASK=0", "WHITE_SUBMENUS=1" }, "", "Windows Aero", 0x00000001, 0x0000000e, 0x00000014, "CustomButton", 0x00000000, 0x00000001, 0x00000014, 0x04030001, "Both" };
            foreach (string s in list) foreach (object o in list1) key1.SetValue(s, o);