Check the link in my signature for complete info on the outlets, including addresses, hours of operation, maps, and directions.
The directions are from WDW, not from MCO, but using Mapquest or Google Maps you should be able to fidn your way easily enough.
I advise skipping the Belz (now called Prime One) outlets entirely these days, as they are undergoing a complete reconstruction and half the mall has been razed to the ground. Instead, go for the Orlando Premium Outlets location and also try the LBV Factory Stores location. Both are much closer to WDW than the Belz outlets.