hmm..when u turn the key on for ur car it should make a noise (signifying that a device was found.)
Alright, did u download the Borland database thingy? If you're using the CD that came with the tweecer then I'm assuming its on there (I didn't use the cd that came with the tweecer).
Next thing. Right click on "my computer" and go to properties. Then choose "hardware" and click on "device manager"
go down to the bottom of the list to "USB"...u should see a yellow circle or a question mark..can't remember which one it is. It will say tweecer next to it. double click on that and find something that says install driver or update driver...something along those lines.
After it'll ask you if you want "a specific place to be searched." click on that and browse to "C drive, program files, stkr, then click on drivers and then click the "next" button
after that u should be good