The problem started when I installed the SonyEricsson PC Suite in order to use my phone as a bluetooth modem. There were some drivers installed and after that my settings in MyPhoneExplorer look very different.
Here is what I get when I select the "search for device". There were only a couple of options before installing the SE suite.

I have succesfully connected the phone one or two times using the the port 15 or 16 (serial ports).
Now I cannot connect. Port 15 gets me a warning "Could not open COM15!" and when I try the port 16 a warning "Phone could not be identified." pops up.
There is no problem pairing the phone with my computer or using it as a BT modem. I have tried all the ports in the menu, but none of them works.
Do you got any ideas? Thank you very much!
- Ilka from Finland
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SE K800, Lenovo Thinkpad SL500 (integrated BT) with Windows Vista Business