QUOTE(Wintersong @ Mar 27 2007, 06:53 PM)

Have you double checked the file type? I know that a lot of the time you download what you think is a .tub file and it turns out to be a .psp file, which you have to convert into a tube yourself.
This is true, but I also would suggest not installing the tubes in the tube folder as installing too many can really slow down your computer. Also putting a file into the tube folder that is not a .tub file and then trying to use it will crash your program.
You can open tubes just like any clip art and drag and drop them into your siggy. I'm not much help on the brushes because I didn't use them much in PSP.