Samsung does a great disservice to Android by enabling Kies mode as the default usb connection. To add insult to injury, in the US the only Kies available is Kies mini for system updates only.
If TouchWiz on the Intercept follows the same menus as the Captivate, unplug your phone, tap menu>settings>applications>usb settings and select "ask on connection". That way when you plug in your phone you will get a box asking how you want to connect. If you select mass storage, it will appear on your PC as a flash drive, no special drivers required. From there you can just copy files to and from your phone.