Samsung PST doesnt detect my Omnia I910

[Guest Julian76C]

trying to have the internet working for my Omnia I910.. I`m using MetroPcs.. I got DC22 firmware already installed on my phone.. followed this steps first :

1. Go To--Settings--System--Data Connection

2. Choose As the modem through USB

3.Connect phone to USB port in computer

4. Run samsung PST and select the i910 dll...

5. The phone should be detected in one of the coms (if not disconnect form USB port and connect again)

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after i`m running Samsung PST ... nothing happend.. tried different usb ports.. tried different versions of Samsung PST.. are there other settings that i have to set them up before starting this process? with the same cable and using same port I can sync my phone to my computer... i`m using win7.. thank you