Can you be a bit more specific on where the connection fail like what error exactly do you get when it fail to connect. Most programs will report the error msg when started from the terminal.
First, make sure the vncserver is running on pclinuxos and then when you enter pclinuxos address on your opensuse to connect, append ":N" to the address where N- 1,2,3 going up ie. your pclinuxos computer has "192.168.10.2" address and hence. try to connect with :192.168.10.2:1", if that fails, try with :192.168.10.2"