Alright well all of the classes were cancelled due to snow. Fortunately it only rained here so I have power. It sounds like they got 2 feet of snow about 40 minutes south of me. So I'll be here.
opengfx and opensfx come installed if you are running 1.0 and you didn't turn off their checkboxes. To install them, you need to put the entire opengfx and opensfx folders into the data folder, not just the files. You can toggle which set you use by looking on the options menu.
So the folder would be C:/Program Files/OpenTTD/data/opengfx