My Acer 4738z got crash, and I need reinstalled Windows XP. But... Acer doesn't support officialy for WIndows XP hardware driver, what a pity.
I goggling and find some its drivers, back up for next time I need. You may download it here:
http://www.mediafire.com/file/zsiibnotvt98g3b/acer%204738z%20driver%20xp.zip.
This Windows XP drivers collection extracted from my friend's laptop, you only need to execute dpints.exe to install all driver. I hope it useful.