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I am Pete, and I'll be happy to assist with your question.
You may need to install different Bluetooth drivers to use the Samsung as a Bluetooth modem if they are not already installed. This method of connectivity is not supported by Samsung and does not always work.
For best connection, you should use a USB connection if possible.
thanks I have a commercial Bluetooth usb adapter and nokia and Samsung both installed ok to transfer files etc so Bluetooth ok. I tried USB lead on Samsung s5610 (which is a 3G phone) and on friends basic Samsung 2G phone and also usb data lead on a Samsung galaxy but all I get is just option of downloading files images etc from Samsung handset to laptop but not an acess point to the internet like you get with eg nokia or even ZTE pc suite. Ie still cant get access point to internet when using a Samsung eg s5610