Hi Zfield, not sure if my comments will help but here goes:
1) Expect you have downloaded and upzipped :
http://www.service.canon.com.au/dri...apturev3082.zip
2) You might also need DR-2580C Driver1.8.zip ( I also run WinXP pro)
Once unzipped and installed go to C:\Program Files\Canon Electronics\CapturePerfect 3.0\Cappe3.exe
Either make a shortcut of 'Cappe3.exe' or drag to your task bar to access it easily.
3) Launch Capture Perfect by selecting Cappe3.exe ( I renamed it to 'Canon_DR2580C_Scanner' So I know what the heck it is.) You'll probably be ok from there. So don't try to launch it from within Acrobat. It will do that for you automatically.
Best wishes Cheers Jennifer. ( Adelaide Sth Aust if it would help to call and talk it through.)