This is sorta hard to explain, but I\'ll give it my best shot.
You probably know that the guncon2 has an RCA cable that hooks between the TV and the standard PS2 cable. I just happened to have a little video dubbing box that removes macrovision from video tapes and DVDs so you can copy them. It has both composite video and s-video inputs and outputs. I thought maybe it would work so I tried it. I plugged the PS2 s-video cable into the box and then ran another s-video cable from the box and into the TV. I then plugged the gun into the composite video input on the box. Well, it worked as I thought. Now I can play Time Crisis 2 with the guncon and s-video. The box only cost about $30 but I think there is something even cheaper out there that you can use. I\'ll see if I can find it and I\'ll post the link.
BTW, TC2 is an excellent game. It\'s the best lightgun game I\'ve ever played at home. It has a lot of great mini games that keep the replay value high unlike other lightgun games.