The Elder Scrolls IV: Oldblivion Mod
 

Description: Oldblivion is a piece of software which allows graphics
cards which are pre DirectX9 to run Elder Scrolls: Oblivion from
Bethesda. This means that Oblivion can run on cards such as Geforce 3,
Geforce 4, Radeon 9200 and so on.

http://www.strategyinformer.com/pc/t.../mod/5539.html