Installation from CD
I bought SiN Episodes: Emergence and went to install it from the CD. It tells me that Steam is already installed (I have Half Life 2) and I have to uninstall it to install SiN. I've already put the CD key into Steam and it's downloading the program.
Why do I have to wait several hours to download a program I have on CD? The updates I can understand, but the entire program? How do I install from CD without deleting my current Steam installation? Why am I forced to download the program if I already have Steam installed?