My situation is similar to this question for Windows 7, except my OS is Windows XP SP3.

I have recently realized I made the mistake of buying a Bluetooth adapter and installing the Broadcom/Widcomm Bluetooth stack driver software. Now that I know that the software is no good, I want to uninstall it. Then I'll install the Toshiba stack for the Cirago adapter. Right now, when I double-click on the setup.exe file that came with the Cirago driver, nothing happens (it doesn't start setup).

I've attempted to uninstall all Bluetooth driver software in Device Manager, and I don't see any remnants of any Bluetooth drivers there.

But I do see that the little Bluetooth icon still persists:

I don't see anything about Bluetooth, Broadcom, or Widcomm in Add/Remove Programs. I don't see any folder names Broadcom or Widcomm in Program Files folder, either. But I do see that Broadcom does show up in the registry with respect to Bluetooth, as shown here.

I also renamed every file in C:\Windows\inf that starts with "bth" so that it ends with ".old".

What should I do now to completely wipe this persistent Broadcom Bluetooth software off my computer?