Hello jema. I play RS with DirectX 7.0a and Windows 98 SE. It is rock solid. Although I don't doubt some people can play RS fine with DirectX 8.0, I have heard WAY too many problems with this version of DirectX with lots and lots of games, not just RS. Therefore, I will not touch it. In the future, I will upgrade to a later release if necessary and leapfrog DirectX 8.0 entirely. IMHO, it is bad news.
Gold Squadron. The brightest star of the Rebellion Fleet!