I've recently jumped on the Arduino bandwagon and am attempting to upload my very first sketch to my Arduino Uno installed on COM port 3. However, I get errors that another device is using COM port 3 and I need to disable that device.
Specs: Win XP, all current SPs. Arduino drivers 1.0.3, dated 12/10/2012, downloaded 12/25/2012. Drivers installed successfully without error messages. Windows Device Manager shows Arduino Uno as the device on COM3. The Uno is connected via USB. The status bar at the bottom of the Arduino Software window indicates Uno @ COM port 3. The Arduino software preferences are set to Arduino Uno (as opposed to one of the other form factors...Duemilanove, etc.).
I can write and compile sketches just fine. When I try to upload, compilation happens fine, but it'll eventually crap out telling that COM3 is in use by a device, and I need to stop that device and try again.
I feel like I'm travelling back to the early 90s and need to manually fix contentious COM ports...a phase of reality I never wanted to go back to...and have been spoiled by plug-n-play to the point where I've forgotten most of what I know about configuring ports from the command line...what is what I suspect I may need to do.
I've not found solutions in Arduino's help, Arduino's forums, or LadyAda.net's troubleshooting guides.
Anyone ever encounter this situation before or have any advice on how to counter it? This MAY be a more appropriate conversation for SuperUser...so if an admin wants to move it...