A while ago I was on the Penny Arcade forums, and someone made a thread about
whether or not they should buy the original Freespace. Being a HLPer as well, I left a post (I'm Rolo over on the PA forums) and some links about FS2open and how to get here.
Unfortunately, a bunch of people there are now trying to find and install the game, and are having a bunch of problems getting things to work. I know when I was getting into FS2open for the first time, it took me two or three days to get all of the VP files downloaded and installed, and I don't think everyone has quite that much patience.
You can see a new thread about that
here. These guys are pretty comupter savvy I'm sure, but most people who come here are expecting a simple download link for the full game, and having to download the full ISOs off of emule, or get the crippled HOTU version patched up, and then get the SCP additions as well.
So it's time for a bit of forum community bridge building... it would be best if the really knowledgeable people here registered on the PA forums and helped the guys there out with some step-by-step "how to install" guides, but if that's not happening then please post helpful information here, and I'll relay it to them.
EDIT: I just noticed MatthewPapa's link to the full game download (bless you for that, MP). I'm not going to post it outside of the HLP, as that could proliferate very quickly and leech out his bandwidth.