The controls on Syphon Filter are sort of like the one Sniper posted back in page one. But instead of using the dpad to look, you would use the joystick. To change weapons, you would press right on the dpad. The down on the dpad you could use to duck and up could be used to jump. The left dpad could be Misc.
Ill try to get a picture up for a better idea.
Edit: Heres my poor attempt for a control scheme. Thanks to Sniper for the original picture.