Problems with reading 800 mb cds

I have been able to burn 800 mb data cds with nero burning rom 6, but I’m not able to read them with windows explorer. Every time I try to open a 800 mb cd my computer starts lagging a lot and does nothing.
What causes this problem and how can it be solved?
Below I have listed the properties of my PC.

Compaq Presario 2,8 Ghz, 80 Gb Hard Drive
512 MB DDR RAM
RICOH DVD+RW MP5240A
DirectX 9.0c

Regards,
Sébastien

Have you tried reading them on another drive? Or on another computer?

No, I haven’t but the same cds work on my friends’ computers.

Try it. Eliminate possibilities. It might be that your burner is good at making CDs but not at reading them. It might be that it makes coasters and they won’t work in any drive. Figure out which it is and you might be able to get some resolution. You’ve eliminated the possibility that your media is bad.