1. There are two main places your cstrike folder would be:

If Its not in either of those, it might not be inside a Valve folder, and would possibly look like this:

Other Mods:

2. Possible dod folder locations:

Place Number 1: C:\Program Files\Valve\Steam\SteamApps\steamlogin\day of defeat\dod

Place Number 2: C:\Valve\Steam\SteamApps\steamlogin\day of defeat\dod

If Its not in either of those, it might not be inside a Valve folder, and would possibly look like this:

Place Number 3: C:\Program Files\Steam\SteamApps\steamlogin\day of defeat\dod

Place Number 4: C:\Steam\SteamApps\steamlogin\day of defeat\dod

3. Possible ns folder locations:

If Its not in either of those, it might not be inside a Valve folder, and would possibly look like this: