Keyboard needs to be replaced - can't find instructions - found a new keyboard for $27.99 - but can't find a manual showing which screws to take off and how to disconnect, then reconnect.

Http://www.batterycentury.com/sony-vgn-fz240e-keyboard-p-77915.html

Scroll to the bottom of this link and there is step-by-step instructions. Also, the link may be slow loading.

I found online a cheaper notebook keyboard more favorable site, want to help you.http://www.keyboard-world.com/

Probably, there are no screws at all.
Look at where the edge of the keyboard is closest to the LCD screen.
Are there a few "tabs" (small "fingers") that extend from the keyboard, and go "under" some piece of the casing?
If so, then gently "pry" the keyboard, until those "tabs" go "over"
(not "under") that piece of the casing.

Now, gently lift the keyboard, a SMALL distance, and peek underneath the keyboard. Look for a "ribbon" cable that connects from the keyboard to the motherboard. Gently "undo" one of the ends of that ribbon-cable, so that the keyboard can fully be lifted away from the motherboard.

Reverse the process to connect that ribbon-cable to the new keyboard, and to "pry" those "fingers" into place "under" some part of the casing.