Well, Lightning. I don't know if you are talking to me when you say we have no idea of what's going on. If that's so, I do know what's going on inside my rig.
I showed my case clearly.
I inserted a CDRW, launched ImgBurn, tried to erase it. Error.
Changed driver to Windows original (in XP this solved all my problems with nForce chipset and drivers), inserted CDRW, launched ImgBurn, tried to erase. Error.
Closed ImgBurn, fired up Explorer, secondary-click over CDRW, Erase it. Worked.
Launched ImgBurn, created compilation, burned to CDRW. Worked.
I'll try rolling back to nForce drivers and using them to erase CDRW with Windows.