Need quite a lot of help....please!

ok....i did what it is written in the installation guide and i have also read the topics in the forum.....but nothing helpfull around here....i am tryin' to get navigami to work on a sony ericsson w850i an when i start the application on my phone and go to the settings and try to config the port it tells me: no such port.....in the comproxy the port is COM1 and the port on my phone is also COM1....what to do....i don't have any ideea please help! i have also tryed COM7 and COM8 but the same problem accured.....