-Image Command

I tried looking for it on search, sorry If I couldn't find it

How do you do -image on Windows7?

Same way you do in every other windows. Get to the shortcut, right click, properties, find the 'target' box and add the -image after the .exe path.

Here's the best way to do it for future use.

Go to the folder in which Guild Wars is installed (by default C:\Program Files\Guild Wars\gw.exe - but somewhere else if you're sensible) - right-click on gw.exe and select Send to -> Desktop (create shortcut.)

Right-click your new shortcut and select "Properties"

Go to the Shortcut tab (should already be up)

In the target box, it will say "C:\Program Files\Guild Wars\gw.exe" - just add a space after the final " and type -image. Click ok and you're good to go - you may want to rename the shortcut to GW - image or similar.

Did it the shortcut method as well, it's actually downloading as we speak haha.

Slightly off topic but I was just wondering why it's better to have it elsewhere? Is it just for security, so programs don't know where to find it?

Because the Program Files (and Program Files (x86) if you have it) are folders that Windows 7 treats very seriously and doesn't like stuff in there being altered.