Hi there - new to board - quick question...

I downloaded the 4.3 gigabyte ISO of the 2007.2 Nav dvd - however when i goto burn it in Toast - it says it is a CD ROM XA iso and can't be burned onto DVD - does anyone know what that means? there is not alot of info online about CD ROM XA... ???

i was successfully able to burn the OS v29 software to CD - and it too is a CD ROM XA file (as indicated by toast) but since i used a CD and NOT a DVD it worked..

but i can't imagine i can put 4.3 gigs on a CD .......

thanks for any assistance...

b