A moving image displaying method to be executed in a network computer system having an operating-side computer and an operated-side computer coupled through a network, the operating-side computer coupling with the operated-side computer for performing input operation to the operated-side computer, and an operation result view appearing on the operated-side computer being displayed on a display unit of the operating-side computer, including the steps of: capturing, by the operated-side computer, event information inputted by the operating-side computer, the event information being information about a playback operation of a moving image; transmitting, by the operated-side computer, control information about playback of the moving image on the operated-side computer to the operating-side computer, based on the event information; receiving, by the operating-side computer, moving image data to be playback-controlled by the received control information about playback of the moving image; playing back, by the operating-side computer, a moving image to be displayed from the received moving image data, based on the control information; and overlapping, by the operating-side computer, the playback moving image on the operation result view to display the overlapped result on the display unit of the operating-side computer.