Problems installing HL2, please help me out.

[MetalMat]

My copy of HL2 just came in the mail today. I installed it, and when I try to register it on steam it keeps telling me : "Installation of Half-life 2 RetailStandard is required before continuing. Please insert your Half-Life 2 Retail Standard CD/DVD into the drive and select 'install' from the automenu.". I already installed it twice, I dont understand what I am doing wrong.

 

[MetalMat]

Still cant get into the steam forums, so bump....

 

[LordPhoenix]

Well steam is being gay now if you got the retail version of it according to some previous posts here so I wouldn't be too surprised.