After a few little problems, I have now gotten HL2 working.

And my god... that is the most beautiful and brilliant game I have ever seen or had the fortune to play... and definitely worth every single penny spent purchasing it via Steam.

I've only played it for a few hours so far, but I am enjoying every single minute. I can't help but wander around the streets of City 17 marvelling at the attention to detail, and I feel like I'm actully there.

Way to go Valve!! *double thumbs up*

God I love this game!! If you don't have it yet, why the hell not??