[VMR]

I'm trying to use my laptop as a screen to play my ps3, but I can't get anything to show up. I have a Pinnacle USB TV Tuner plugged into my computer and the PS3's video output (the yellow cable) plugged into that. The TVCenter program that came with the TV Tuner the PS3 doesn't register at all. I tried going to AV, but that still didn't help.
Please help! I just got MGS 4, and I haven't even played it yet. I'm kinda in the middle of nowhere and this is the only way I'll be able to use my PS3 for like a month . I've already started going into withdrawl from GTA IV...