x3:tc on win 7

ive installed x3: terran conflict and when i try to play the game for the first time it keeps telling me i need to open it with administrator privlages first. i am the administrator of this computer (ive got the only account on here) but it keeps saying i need the admin privlages to run it for the first time. ive tried using vista compatability mode and checking the "run as admin" box but it keeps coming up. ive even deleted my password to no avail. i have a AMD phenom 9850 (2.5ghz) chip on a asus m3n78 pro motherboard with 4gb of 1066mhz patriot ram with a nvidia 876mb gtx260 vid card and a samsung syncmaster 226bw monitor. any help on how to get win 7 to actually recognise me as the admin and to let me actually play x3 would be majorly appreciated. ive got eval build 7264 (it wont let me activate it for some reason tho).

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