Download:
http://rapidshare.com/files/71904302/Half-Life-Full-part1.rar http://rapidshare.com/files/71916572/Half-Life-Full-part2.rar http://rapidshare.com/files/69710167/Half-Life-Full-www.platformtr.com.part3.rar
Half Life update :
ftp://ftp3.sierra.com/pub/patches/pc/hlupdate.exe