ati - How to install old AMD Catalyst 12.4 drivers on Ubuntu 12.10?

I have an ATi Radeon HD 3650 AGP, which does not support 12.8 and 12.9 drivers. The latest supported version is 12.4, but Catalyst 12.4 does not support Ubuntu 12.10. How can I downgrade to 12.4 or 12.6 Catalyst drivers in Ubuntu 12.10?