What I'm interested in right now is Flash Pixel Explosion 151 kb file. Download it and extract anywhere on your hard disk, let's say new folder \kaboom. Inside \kaboom folder you will find two new folders \kaboom\com and \kaboom\gs and two additional files kaboom.swf and kaboom.fla. Latest one can be opened with Flash CS3. Do it.
Open document Library if it isn't already open and locate xuroqflash.png file. This is the one we will change first. If you right click on file name and choose properties you can see image dimensions are 415x100. Create new image with same dimensions with your favorite image editing software.
You can also edit 'btn' movie clip, add action buttons or just edit text like me.