Apparently Win x32 (x86) systems won't get so much love from ED from now on and if you have one, you have noticed that by 1.0.0.8 HDR, cockpit shadows and high settings are not selectable.
I was going to change to win 7 x64 when I'll update my system, but until then:
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If you still want HDR and cockpit shadows:
1. back up options.lua from C:\Users\*name*\Saved Games\DCS Warthog\Config
2. open options.lua
Change the following:
["HDR"] = 0, to
["HDR"] = 2, (2 is right for me)
["cockpitShadows"] = false, to
["cockpitShadows"] = true,
and
shadows have to be on, so 2 for eg.:
["shadows"] = 2,
3. save file, and afterwards: right-click on the options.lua file / proprieties / read-only: on because DCS is trying to modify it, afterwards.
PS: on your own risk, since ED didn't add it with the release.