dongle cable w/ serial port......need help
 

I bought a dongle cable (serial port) without any software to support the cable, now my PC does not recognize the phone when its turned on and conected.

I have several sets of unlocking software, but none of it can not find the phone.

I am trying to unlock a sony ericcson t28 world phone.

I would be greatful if someone could point me in the right direction. Thanks in advance! :)