You need a stand alone ATSC tuner such as the LG 4200A or the Samsung SIR-415 to tune in your stations.
You also need to check out antennaweb.org to detemine what type of antenna you'd need for your location. In general most HD stations are broadcast in UHF and a normal UHF antenna will work, there are cases where the stations are VHF though. There is no such thing as a HDTV antenna, that's just marketing hype...
As for hooking it up, what options does the projector have? You might need to run a set of component cables to it or get a DVI switcher to allow you to hook two DVI sources to it...
You also need to check out antennaweb.org to detemine what type of antenna you'd need for your location. In general most HD stations are broadcast in UHF and a normal UHF antenna will work, there are cases where the stations are VHF though. There is no such thing as a HDTV antenna, that's just marketing hype...
As for hooking it up, what options does the projector have? You might need to run a set of component cables to it or get a DVI switcher to allow you to hook two DVI sources to it...