He doesn't have the space to download and burn an ISO. So the only relevant link in the link you provided is the Slackware Store, and it sounds like he's already tried that route.
You might want to ask one of your friends to download and burn an ISO for you. Make sure to check the MD5 or SHA1 (whichever is used--I'm not sure) against the image file and again against the CD. And burn the CD at the lowest speed.
If asking a friend to download and burn it isn't an option, I don't know what to tell you.