EQ2 loading error: DirectX 9.0c required

Any ideas why EQ2 is complaining about a lack of directX 9.0c on
startup?

I was under the impression that cadega reported itself as 9.0c? I'm
running from CVS checked out 18.12.04 and the source seems to point at
it saying 9.0c:

winex/dlls/dxdiagn/builtin_containers_dx9:    
Property dwDirectXVersionMajor 9
Property dwDirectXVersionMinor 0
Property szDirectXVersionLetter "c"
Property szDirectXVersionEnglish "4.09.0000.0904"
Property szDirectXVersionLongEnglish = "DirectX 9.0c (4.09.0000.0904)"


Any ideas how else EQ2 might be checked for DX version? Or methods to
find this out?

Thanks

Simon