LOL Matski trapped in the stone ages!!!
Steam is the new halflife, HL was getting pretty shakey as it has had more dodgy addons and upgrades than Michael Jackson.
So they rewrote the whole interface.
Its free if you own a legit copy of halflife, get it
here
PS My steam ID is
Garijuana
Edit:
Mario I looked for maritizio on steam but it says there is no such ID