i wanted to play half life 2 so much i bought a new computer to play it. after i bought the christmas gift pack with hl2 hl source and hl2e1 with counter strike source i was saddened to learn i had to download it and with only a dial-up connection at the time i was pissed. well, i now have high speed, i've downloaded the game data for source, episode 1 and half life 2 and the only one that works good is half life 2. source and episode 1 both have a problem with the look up and down keys, i tried binding them to the keys i usually use and it doesn't work. the mouse works fine for looking but i really don't like taking my hand off the keyboard to look around during a gunfight. does anyone know how to fix this problem so i can use the same keys as half life 2 or is it unfixable. help me please, the half life series is my favourite computer game.