Mounting CS:S content for use in another mod

[Zacker]

I am not sure if this is the right forum to post in, but here goes anyways:

At Sands-of-War2(www.sandsofwar.net) we want to have access to both HL2 and CS:S content in our maps. HL2 content works fine, but CS:S content displays as error(models) or purple/black(materials).

We have tried loading them through the GameInfo.txt, which you can see below. This however don't work. What else do you have to do?

"GameInfo"
{
game "Sands of War 2"
type "multiplayer_only"
nomodels "0"
nohimodel "1"
nocrosshair "0"
FileSystem
{
SteamAppId 240
SteamAppId 220
SteamAppId 320 // This will mount all the GCFs we need (240=CS:S, 220=HL2).
ToolsAppId 211 // Tools will load this (ie: source SDK caches) to get things like materials\debug, materials\editor, etc.

//
// The code that loads this file automatically does a few things here:
//
// 1. For each "Game" search path, it adds a "GameBin" path, in <dir>\bin
// 2. For each "Game" search path, it adds another "Game" path in front of it with _<langage> at the end.
// For example: c:\hl2\cstrike on a french machine would get a c:\hl2\cstrike_french path added to it.
// 3. For the first "Game" search path, it adds a search path called "MOD".
// 4. For the first "Game" search path, it adds a search path called "DEFAULT_WRITE_PATH".
//

//
// Search paths are relative to the base directory, which is where hl2.exe is found.
//
// |gameinfo_path| points at the directory where gameinfo.txt is.
// We always want to mount that directory relative to gameinfo.txt, so
// people can mount stuff in c:\mymod, and the main game resources are in
// someplace like c:\program files\valve\steam\steamapps\<username>\half-life 2.
//
SearchPaths
{
Game |gameinfo_path|.
Game hl2
Game cstrike
Game hl2mp
}
}
}