First things first: I asked about two things, specs and screenshot. You only posted driver info but didn't say what a computer you do have -- why?
Why do you believe it's ok to ignore half of the answer about your issue?
Second, turned out you have GLDirect. It's a software that emulates OpenGL via DirectX (Jedi Academy does use OpenGL for ouput, not DX), and, as almost any other emulator, it causes big performance degradation.
That software didn't materialize on your PC outta nowhere; it's you who downloaded and installed it, even if you don't remember it.
It's necessary to delete GLDirect to get better FPS.
If you can't find GLDirect in the list of installed programs, and you don't know how to delete it, delete OpenGL32.dll from "Jedi Academy\GameData". If there is no OpenGL32.dll in that folder, search for OpenGL32.dll on the whole system partion (aka, usually, C: drive), delete it, and reinstall videocard drivers.
To make sure is GLDirect really gone, once again go to MBII => Settings => Video => Graphics Options 3 => Show driver info -- there should be no any mentions of GLDirect; Only NVIDIA- or ATI-related (depends on what graphics you actually do have) data must be there.
If you believe you deleted GLDirect, but "Show driver info" still shows the same text, you didn't delete GLDirect properly. Try again until it says NVIDIA or ATI (or Intel, if integrated video is only thing on your computer).