First you have to find a windows Vista compatible driver for your card. If it's a desktop GPU just go on the amd-ati website, if it's a laptop card you have to go on the PC manifacturer website. If the manifacturer of your laptop doesn't support Vista just find another one that produce a model with the same screen and the same video card.
When you have the correct driver go here: http://www.hardwareheaven.com/modtool.php
and download Mobility Modder Software (you have to run it on a windows XP, Vista or 7 machine, it doesn't work on win8). It will modify your driver and make it work under win8!!!
does anybody knows how to make ati radeon x1300 (laptop acer asire 5100) to work with windows 8? I am using 64 bit
I solve this driver problem after 3h. Here is the solution for instaling Ati Radeon x1300 driver for Windows 8 32:
1. Download catalyst_8-31-100_vista32_rtm
2. Set for downloaded file(catalyst_8-31-100_vista32_rtm) the compatibility mode for Vista(simple, not Service pack 1 or 2)
3. Instal and enjoy!