6. Internal Error 2203?
This error can occur when installing under MS
Vista if your user account does not have full permission to your temp directory.
The temp directory is generally C:\users\[username]\appdata
Appdata is a hidden folder, so if you don't see it you can type it manually into the navigation bar in windows explorer.
Once in the Appdata folder right click the white space on the right pane in Windows Explorer and select "Properties"
Click on the permissions tab
Select "Edit Permissions"
Make sure that "Full Access" is selected for your account (and the Administrator accounts).
Click apply and ignore any errors.
Run the install again, it should now work.