138g+Win98SE

Hi
I have installed the Asus util and drivers, but they never worked properly, so I decided to deinstall the software and drivers and replace them with the latest util and drivers. Unfortunately the uninstallation failed, the uninstall.exe tells me that it have completeted all maintainance operations.. but it didn't.
Now my question, has anyone got a kinda list what exactly the installation routine does. Maybe I have to remove any file, driver and registry setting manually. I am looking forward to any suggestion. Thx in advance.