First, SuSe 9.2 does not use the devfs system. It uses the udev system to manage devices, and is standard with distributions incorporating the 2.6 kernel.
Second, your Palm Tungsten connects through USB. That device relies on the usbserial and visor kernel modules, which are loaded when you press the HotSync button. The device name you want to use is /dev/usb/ttyUSB1, and is only valid after you press the HotSync button.
To correct your problem with the connection, start KPilot, then select Configure KPilot from the Settings menu. Then select "Device" from "General Setup", type in "/dev/usb/ttyUSB1", click on OK, then try a HotSync operation.
If that does not work, try "/dev/ttyUSB1" and see what happens.