Add this in "GameConfig.txt" (C:\Program Files\Steam\steamapps\****MY ACCOUNT****\sourcesdk\bin\ep1\bin\":

"StargateTC2"
{
	"GameDir"		"c:\program files\steam\steamapps\sourcemods\stargatetc2"
	"hammer"
	{
		"GameData0"		"c:\program files\steam\steamapps\sourcemods\stargatetc2\sgtc2.fgd"
		"TextureFormat"		"5"
		"MapFormat"		"4"
		"DefaultTextureScale"	"0.250000"
		"DefaultLightmapScale"	"16"
		"DefaultSolidEntity"	"func_detail"
		"DefaultPointEntity"	"info_player_tauri"
		"BSP"			"c:\program files\steam\steamapps\****MY ACCOUNT****\sourcesdk\bin\ep1\bin\vbsp.exe"
		"Vis"			"c:\program files\steam\steamapps\****MY ACCOUNT****\sourcesdk\bin\ep1\bin\vvis.exe"
		"Light"			"c:\program files\steam\steamapps\****MY ACCOUNT****\sourcesdk\bin\ep1\bin\vrad.exe"
		"BSPDir"			"c:\program files\steam\steamapps\sourcemods\stargatetc2\maps"
		"CordonTexture"		"tools\toolsskybox"
		"MaterialExcludeCount"	"0"
	}
}
