1. There is a plugin and its called like Checkerboard something something. lol
-O/T I hate that image lol
2. Because most of my vector images are bigger than 800x600 or are 800x600, and you cannot have preview images that size.
3. Glad you like em and I'm working on a new piece right now so hopefully it'll be up by today.
EDIT: here you go the link is to the plugin. viewtopic.php?f=16&t=4879