I have vista & have turned off UAC

After installing when I go to play it I have seen 2 things

"E. B. Trivial Script Error

Execution of command 'RomeTW.exe-modieb -show_error' failed (error 2: the system cannot find the file specified.)"

and this

"EB TrivialScript Error

can't open file 'EB\preferences\preferences.txt' (error 3: the system cannot find the path specified.)"

I have obviously installed it wrong or in the wrong place. I have tried it a couple of different ways. Every way I try it when I select a place to put it, it warns:

"Destination Directory is not valid. Please choose folder where Rome Total War was installed. Do you want to proceed (click yes if you have expected this error)"

Any folder I choose gives me this message. The rtw file/folder/whatever is in programs. It tells you from the start not to put it in "program files".

I am not a pc wiz but I feel one should not need to be one to play this game. I had no problems installing and playing eb 1.0 and it is my favorite game of all time! I want to play eb 1.1. Can anybody help?

I am sorry if this has been explained. I looked in the 'how to install' page and thought i did what i was supposed to do. Like I said, I had no problems with 1.0.