go to the remote s60 website here
scroll down until you see "download" and 2 zip files
click on a link. it should either be solidfiles, mediafire, mir.cr, embedupload, or mirrorcreator
download the .zip file and unzip the file
there should be an .exe file and a .sis file
download the nokia PC suite here. it may look like a fileless file but its actually a .7z file, so use 7-zip if you have to
install nokia PC suite and connect to your nokia N73 using a usb
put the .sis file from earlier on the nokia
install the .sis file on your nokia (DO NOT DISCONNECT THE USB CABLE FROM THE COMPUTER AND NOKIA N73 THIS WILL BREAK IT AND YOU WILL NO LONGER BE ABLE TO RECORD YOUR SCREEN ON YOUR NOKIA S60 3RD EDITION)
install the .exe on your computer
run the program after installation
click connect
install a screen recorder for your PC. if you want to make funny moment clips, use fraps, but if you wanna make an actual video play a game like sims 2, use hypercam
open the app (fraps or hypercam 2)
if you are on hypercam 2, select the area you want to record (the phone)
if you are on fraps, it should automatically select the windows for you, and you can crop it in an editing software such as vegas pro or virtualdub.
start recording
now you can record some epic phone gameplay!