COM port problem!!

[TcM]

Well I have a data cable for my mobile, and it's software to transfer images/etc.. to my mobile, but when I start it it says that the COM port is already used by another program, but I have none! then I tried another program but same error! any suggestions please? How can I detect which program is using that COM port so I can end it? thanks

[Jordan]

Your com port is probably assigned to your modem or LTP1 port. Try changing your com port of the cable software to 4-8.

[TcM]

Yes It is port 5 and tried 6 too. Still same problem. and LTP1 is assigned to ECP Printer Port (I don't know what's this lol)