I asked my friend in US buy me an HL2, reason is it costs less than bought it in Taiwan.
He emailed me the CD-Key, i gave him the disk.
But there is a huge problem comin'.....Steam ask me to insert my HL2 disk in my disk drive (display as below), I don't have it, but I bought it!
Could I just register my HL2 CD-Key without an original retailed HL2 disk?
Is Mini-Image work? Steam didn't tell me that I have to use my disk to register my Key, or I just buy it in Taiwan....