I have downloaded the newest update to F.E.A.R fist encounter assault recon. but wen i`m installing it i get a error message that it could not be installed. the error message look like this:

the file C:\program files\installshield installation information \{2b6*3*2*-*****-b780-d978f5f13EAC}\\fear_update_en_107_108.exe could not be opened. please check your disk is not full and that u have access to the destination directory.

I have not C:\program files. i have I:\ how do i change the directory of the installation?