Keyboard replacement

Thanks for the follow up. While waiting I persevered & finally managed to get in. FYI, here are the specifics for accessing keyboard in this Sony Vaio model VGN-FS920 (PCG-7L1L:
Removing battery will expose two flat head screws. Remove them.
Then turn LT around with back facing you. Look at hinges and you will see cover is split horizontally. Pry gently in the split at each end. I found the right side popped apart easiest. Then when room to get fingers under the loosened end of cover, move fingers gently around edge popping the plastic catches loose as you go. When all catches are lose remove cover. There are six plastic catches on back side and nine catches on front so its a struggle. Be gentle, be patient.
After cover is removed, turn LT around with front facing you. Keyboard is held in place with 4 screws at top and one screw in middle. Middle screw is accessible from underside of LT. After screws are removed Keyboard can be rotated toward you giving access to the ribbon connector. Move catches (black)on ends of connector to the left until ribbon cable is loose.
Hope this info will help someone else.
Mtnjal