Mod doesn't show up

[po]

I installed a Half Life 2 mod into my sourmods folder, but it doesn't show
up in "my games" after a restart of HL2.

I had extracted "mistakes of Pythagoras" to the folder. I was supposed to
extract it, wasn't I? Can anyone help with this?

[Buddyboy]

C:\Program Files\Valve\Steam\SteamApps\SourceMods


this is where all mine are located you just need
to make sure the mods folder is in there with
all its programs and stuff while steam
is not started then start up steam offline
and it should be there on your games list.
I normally use a bare bones start up with
Windows xp nothing but Microsoft processes running in the
background.
So Steam is not running anything when I place
the mods into that folder above. Not sure that makes any difference.

buddyboy

I installed a Half Life 2 mod into my sourmods folder, but it doesn't show up in "my games" after a restart of HL2.
I had extracted "mistakes of Pythagoras" to the folder. I was supposed to extract it, wasn't I? Can anyone help with this?