http://speedy.sh/sqPcC/Theuaredead-s-HL1-NPC-Pack-For-HL2.rar
You'll need to extract the texture files from HL1:S and HLDM:S.
Credits:
Shotgunguy - Rigging the models for player models
Someone with a name which I don't know - For making the HL1 GMan Suitcase (I don't know who you are sadly)
ValvE - HL2 and HL1
Theuaredead - Making the models work for NPCs and making the pack.
Screens