Phantom keystrokes

Ive got Win 98 se and the keyboard (a std Microsoft one) has started
inserting a numeral (eg4, 5) before and after some letters - but not
all, the delete key inserts a '3' and the backspace deletes the letter
one space behind the cursor!!.
Ive no idea why (although my father in law has started using the
machine and has a habit of pushing keys seemingly at random!!, or how
to return it to normal
Any suggestions how I can return my keyboard to normal working order?
Thanks

Does the problem still occur if you use a different keyboard?
--
Jeff Richards
MS MVP (Windows - Shell/User)
"Phil Longworth" wrote in message
m...
Ive got Win 98 se and the keyboard (a std Microsoft one) has started
inserting a numeral (eg4, 5) before and after some letters - but not
all, the delete key inserts a '3' and the backspace deletes the letter
one space behind the cursor!!.
Ive no idea why (although my father in law has started using the
machine and has a habit of pushing keys seemingly at random!!, or how
to return it to normal
Any suggestions how I can return my keyboard to normal working order?
Thanks