Help with Throttle Position Sensor Code

I got a P0120 Throttle/Pedal Position Sensor/Switch A Circuit Malfuntion code and I was wondering how to fix it. No other codes other than this one though. I've never messeed with the throttle body before so it's nothing I did. I read this thread http://www.automotiveforums.com/vbulletin/showthread.php?t=244275&highlight=Throttle+Position+Sensor+code but I still dont know what to do. Does anyone have any specific info? Thanks.

I found this: http://www.plymouthlaser.com/tps.htm so I'll try that and see if I can figure it out.

Ok, I can't get the electrical connector off the TPS. I got the clip on the top side of the connector off with my knife but it looks like there's another one on the other side. But there seems to be no way to get to it. There's a bunch of electircal harnesses and the fuel rail in the way. I could take the whole throttle body off but that would be a BIG pain--capping the coolant lines, taking all the hard to reach bolts and screws off, and the throttle cable which I have no idea how to get off. Ahhhh, what should I do?