When I try to run the Steam version of the game (to be able to play mods with bunnymod xt) some commands don't seem to work (ex. bxt_autojump; bxt_timer_). Any help?

Open WON ver. and change game I guess? But you have to extract mod files to where your bxt is (goldscr package/half life)

When I open mods with the WON ver. I always get the same error message: "could not load library d:\speedrun\half-life[mod name]\cl_dlls\client.dll" That's why I'm trying to run in Steam version. But the majority of the commands doesn't work in this version.

Well if you extract your mod file to "d:/speedrun/half-life" and launch half life won go to change game and a list will appear with mods and games available. Make sure you don't extract ur file to steam's half life instead of your speedrun package's half life.

I did that and I got the same problem I'll try something with the version of the Injector or the mod but probably nothing will happen