blargh

Using imgburn worked. Thanks. I don't have a SATA DVD-ROM by the way. It's incredible how finicky the process is. You'd think any old burning software would work.

I've made a slipstreamed installation using nLite, but none of the DVDs I burn will boot. Virtual PC runs them fine, and my computer will boot my original SP2 disc without any issues. I made the first two with nLite, and the third with DeepBurner. I've also tried low burn speeds. My motherboard is Gigabyte P35-DS3L.