Question: Day of Defeat

[Nova]

I just downloaded an old version of Day of Defeat (the original, not Day of Defeat: Source), were should I install it? I have Half-Life 1 non-Steam (WON), version 1.1.0.8. Does anybody know where I should install it (the default directory is probably not right, so I didn't even try it). Here is a screenshot of the installer, with the default directory currently set:

[Grading]

Not sure unfortunately as I got all of my installs from my old CS disk. That sounds right though since it is a Half-Life mod afterall.