You can find the STALKER content downloads here:
This includes playermodels, maps etc.
http://www.forums.hypergamer.net/the-cordon/s-t-a-l-k-e-r-content-pack-*dl*-thread/ (http://www.forums.hypergamer.net/the-cordon/s-t-a-l-k-e-r-content-pack-*dl*-thread/)