Downloading Half Life One With Half Life 2 CD Key?

[dookiebrown]

i bought half life 2 game of the year that came with half life : source and counter strike : source
i KNOW i can't use play esf on half life source but can i download half life 1 through steam ? or do i have to go buy the original half life 1 with its cd key or do i just need to install half life 1?
i have a copy of the original half life 1 but i don't have the cd key... i can easily install it but will i need oficial cd key to play online ?

 

[Skyrider]

I'm afraid you need the Half-Life 1 key in order to download Half-Life 1 through steam. The key you currently have on your steam account will only let you download the Source games (Half-Life: Source, Counter-Strike: Source, etc). So yes, I'm afraid you have to buy Half-Life 1, or find the key you have on your current CD Copy.