Originally Posted by
brooklyn_bike
get a Park Tool HCW-5 Double sided bottom bracket lockring hook spanner for 13.00. please don't try to remove and install a cog with a punch and a hammer. i doubt you'll get the cog as tight as it should be and you could damage your cog/hub/wheel to save a little money. Harris Cyclery also has a Chainwhip for 16.95...
Dude, I'd hope the OP has had his question answered after...
SIX YEARS.