I just loaded and ran the PC GAMER/MASTERTRONIC budget release of "Rogue Trooper". It played seamlessly on Windows 7 x64 with no fixes required.
(System: Windows 7 x64, 4GB Ram, ATI 4870x2 Graphics card, ASRock 4core1600-GLAN mobo)
Just one comment - I didn't install the optional Mastertronic "Gameshadow" auto patch software so cannot confirm if that works under Windows 7 x64.