2.I copied all files under rtw data into the BI
umm, that is not only completely unnecessary, its completely wrong!

I think you might have followed the discussion about making a mod-folder for a BI mod instead of how to run RTW under BI! (for that though you copy all the BI data and folders into a separate mod-folder, still not what you have done anyway)

what running with
"...-BI.exe" -mod
on your target line does is make the BI.exe look in RTW/data instead of BI/data. That does mean though that as you've only messed up BI/data your RTW game should still be working (and playing from that shortcut).

I'm not too sure what you managed to break! Try getting back to a clean original copy. All you need to do to run RTW under BI.exe is have a shortcut that says:
"X:\....\..\Rome - Total War\RomeTW-BI.exe" -mod
note there should not be any quotes after the -mod