If you don't know what screen resolution you use follow the quick instructions below to find out and if your resolution doesn't exactly match those below, please just select the closest.
Windows Computers:
1) Right click on your desktop and select "properties"
2) Click onto the "Settings" tab
3) You should then see towards the bottom left, the currently resolution you are using.
Mac/OSX Computers:
1) Click the top left Apple icon and select "system preferences"
2) Select "Displays"
3) You should then be given a list of resolutions towards the left of the pop up, the one that is highlighted in grey is the one you are currently using
Nix Computers:
1) I expect you will know your resolution


