Move to new computer

[Richard Bishopp]

I know  this has been asked before but I can't find the simple answer.
 What file(s) need to be copied to a new computer using the same version of
GnuCash ?  Windows vista to windows 7
ver. 2.4.10  to 2.4.13   well close to the same.

Thank you to whoever can help.

Rich...