Maddog,
The CH Control Manager software is a strange, fickle beast. By tweaking your USB power settings in Win XP, you may not have completely fixed your issue. It has taken me some time as I had similar problems with my setup, but I think I have an install routine for the CH gear and the control manager that works well, albeit a bit convoluted.
If you have problems again, try this:
Clear all the CH control manager stuff off your system.
Plug your CH gear into your USB ports and let Windows detect them and load the drivers (select automatic if it asks). Reboot the system and make sure you get a clean boot (i.e. no more windows loading of your CH devices...sometimes, it takes a couple of boots).
Now load the CM software and be prepared to do a lot of clicking :-) You will be prompted to load drivers for this thing quite a bit, just keep clicking next and let it go.
Once it is all done and windows says your hardware is installed and ready, reboot the system. You will most likely have to do the whole click and load routine again. Just keep doing it until you get a clean boot just like above.
Once you get the clean boot with the CM software loaded, run the program and load a stick map (if you have one). You will once again go through the device detection/driver load routine...just click through like before until you get a clean boot.
Once you have the clean boot with the CM software and you can load a stick map cleanly, run AH and go to setup. Your gear will be displayed either by its name or as device numbers (1,2,3, etc). I do not know why it seems to randomly refer to your stick, etc by its name or by device type/number.
Select the roll, pitch, throttle and rudder inputs and assign the correct axis/device by clicking on the "set inut" button in AH. Don't worry if you don't see any values changing on the device/axis yet...just select each one and when done, click on "apply" and it all should come to life. If you have selected the wrong axis or device for a given input type (roll, pitch, etc)...don't worry, you can change it by selecting the device again and clicking "set input". Once everything is selected, calibrate it and you shouldn't have any more problems with it.
I use this method to load up my CM software and the CH gear and it works great. Once done, I never have to do it again (unless I reload windows or AH, of course). I've gone over a year on that setup in the past and never even had to calibrate the gear.
I use all USB CH gear.