900MG Cd

How can I get my nero 6 Ultra to support 900 MG burning cds?

In this case I wonder how I can get the
Nero Vision Express 2 to support 900mg cds…

I’ve done 90 minute audio CDs (800MB blanks) with NERO 6.

Are you sure your CD writer supports such big CDs?
Do you mean 900MB or 800MB?
900MB is very unusual and I don’t think many drives support it.