I've found that a regular screw driver works okay for the filler cap. Also there are some instructions in the owners manual about the oil change. It's really not that bad. It's probably worth it to pick up a plastic oil drain container and funnel at Wal-mart. Pretty inexpensive and will cut done on the mess. I know this is not ecologically sound, but I put the used oil in old plastic milk jugs and throw it away with the trash.
-PES