What you saw on the sticker was the GVW, or Gross Vehiclure Weight. Anyways, that is the maximum weight the vehicle should weight, that includes vehicle, passengers, bags, etc. That's not the Vehilce curb weight, thats the maximum Gross vehiclure weight the car should weight once everyone and everything is in it. That means that the total weight of the car and everything in it should not exceed 3450 lbs (that is car + people in it +bags and luggauge, etc). Again, this does not refer to the curb weight of the vehilce, it refers to what is explained above.
The curb weight is the weight of the vehicle as you are thinking, the weight of the vehicle unloaded, just sitting there.
The curb weight of a 1994 DX Honda Civic coupe, according to edumnds.com, is 2231 lbs
http://www.edmunds.com/used/1994/hon...enav..6.Honda*
A 1994 DX Hatchback is 2108lbs
http://www.edmunds.com/used/1994/hon...enav..6.Honda*