DirectX help

Well hello to you all.First of all,I'd like to thank you for the best PC game ever.I mean it.I decided to install EB 1.1 on my brand new vista machine and there's a DirectX issue.The on-board version is "higher" than 9.0 but the game doesn't recognize it and still wants the 9.0 version.When I try to install from the R-TW CD it states that since the on-board version is "higher" there is no option to install 9.0.Can anyone suggest a solution?Has anyone else encountered a similar situation?Thanks in advance.