fsx.cfg

I have 3 lines in my fsx.cfg which tells the simulator (or computer) to trust my SDK tools.
E:\Program Files\Microsoft Games\Microsoft Flight Simulator X SDK\SDK\Mission Creation Kit\object_placement.dll.onltntknaklliqzbwakrwqqiahczouricoblewiu=0
E:\Program Files\Microsoft Games\Microsoft Flight Simulator X SDK\SDK\Environment Kit\Traffic Toolbox SDK\traffictoolbox.dll.zcbnluctlawzhwqqzbotktahwkahcnbttilceoqq=0
E:\Program Files\Microsoft Games\Microsoft Flight Simulator X SDK\SDK\Environment Kit\Special Effects SDK\visualfxtool.dll.qhuektcuhbehcaelzbeoatelkezqhebqwwunkctz=0
They are all set to "0". When I edit the cfg in notepad to change the 0 to 1 and save it, all 3 of those changes back to 0 when I start the sim.
I am running XP Pro and not Vista. My SDK is in the microsoft games folder on E drive along with FSX. Any ideas why the computer or sim will not accept the 1 and changes it back to 0?
E:\Program Files\Microsoft Games\Microsoft Flight Simulator X SDK\SDK\Mission Creation Kit\object_placement.dll.onltntknaklliqzbwakrwqqiahczouricoblewiu=0
E:\Program Files\Microsoft Games\Microsoft Flight Simulator X SDK\SDK\Environment Kit\Traffic Toolbox SDK\traffictoolbox.dll.zcbnluctlawzhwqqzbotktahwkahcnbttilceoqq=0
E:\Program Files\Microsoft Games\Microsoft Flight Simulator X SDK\SDK\Environment Kit\Special Effects SDK\visualfxtool.dll.qhuektcuhbehcaelzbeoatelkezqhebqwwunkctz=0
They are all set to "0". When I edit the cfg in notepad to change the 0 to 1 and save it, all 3 of those changes back to 0 when I start the sim.
I am running XP Pro and not Vista. My SDK is in the microsoft games folder on E drive along with FSX. Any ideas why the computer or sim will not accept the 1 and changes it back to 0?