Acer never shipped this desktop pc with Windows XP installed, hence it's unsupported by them in Windows XP.
So, the next order of business is to identify the onboard hardware. Desktops (unlike Notebooks) can use generic drivers.
To find make and model of pc hardware, EVEREST Home Edition
is a free system diagnostics, system information program that will id most hardware onboard a mb. as well as the actual motherboard. It will, in some cases, actually provide a download link for the driver.
Alternate Everest download link: (offers 2 sites to dl program from)
Run the program and then:
Click on Computer
Click on Summary
Right hand window (hardware) if the text is BLUE
this is a link to the web site for that particular hardware.
If you have additional questions or need further help, please post copy and paste of the COMPUTER SUMMARY report (Leave out the Debug –PCI section) from Everest.
Get XP driver links for Windows XP in this thread: http://forums.driverguide.com/showthread.php?p=125127