Installing Just Cs source to fix error 1305

[kedirac]

hey how do u install just cs source i have hl2 retail i see the option not to install source but there is no red x under the hl2 optioion anyideas uim getting error code 1305 wich has to do with the base source sounds.gcf

 

[bonhomme]

you need to select the second choice "install cs:source" when you see it...