You don't need to use caps, and you shouldn't post your email in a public forum, unless you like spam.
I don't know why you are having so much trouble with it but you can set the default install location in the registry.
Start -> Type regedit - Enter -> Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
On the right you should see 'ProgramFilesDir'. The default value should be 'C:\Program Files'.
Just change that to whatever you want, run the Mass Effect installer then change it back to 'C:\Program Files'.
But you should't need to do that anyway.
I don't know why you are having so much trouble with it but you can set the default install location in the registry.
Start -> Type regedit - Enter -> Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion
On the right you should see 'ProgramFilesDir'. The default value should be 'C:\Program Files'.
Just change that to whatever you want, run the Mass Effect installer then change it back to 'C:\Program Files'.
But you should't need to do that anyway.