i found i had to make the folder my self and see what happen it, it just so happen to work anyways heres what the install log says
Installer for FSUIPC4.DLL version 4.28
Looking in registry for FSX install path:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft Games\Flight Simulator\10.0
Parameter"SetupPath"
SetupPath="C:\Program Files\Microsoft Games\Microsoft Flight Simulator X\"
Checking version of FSX.EXE:
... Version 10.0.61355.0 (Need at least 10.0.60905.0)
Checking compatibility with installed SimConnect:
... Probe Manifest fails to match a valid base SimConnect needed to load FSUIPC4!
Found later build SimConnect 61242 (SP1 May07)
*************** End of Install Log ***************
theres also a fsuipc dll in there but under it it says" 3.8.1.0" is that the right dll for fsuipc4?