Im having troubles installing

I have CS retail and when i install it into the cs folder and stuff... then i try playing it and it says i need the hl.dll thign which i dont have....and when im connecting it says
Error: You are using the wrong dll at the top.... and then CS freezes and bring me back to the desktop. :cry:

http://www.esforces.com/forum/showthread.php?s=&threadid=136

Don't forget to scream at vt for screwing the installer and still not fixing it