Folder space problem when burning DVD on Picture show 2

[KenPeds]

This has never happened to me before. I'm trying to burn a slide show and 2 short videos onto a DVD. When I hit burn, I get an error that says

"The available space in the working folder and DVD folder is not enough. Please change to another path and restart the burning process". The total file is less than 1gb, so it's not a big slideshow?

I try to change the folders for the disc image file and the DVD folder, but still doesn't work.

Probably something easy, but it's killing me.???
NTSC and windows XP, pentium4, 2.6 ghz and 512 ram if any of that matters

HELP ME PLEASE, going out of my mind trying to solve this.
Thanks,
Ken