burn issues cd not dvd

I had a bad copy of the beta, the MD5 didn't check out, and it was giving me the 8007241 error code, so I redownloaded it, took about an hour. I checked the MD5 and it was good. So then i tried to burn it, but heres the issue. Nero wants to burn it as a cd, not a dvd, even though the file is the correct 3.12Gb size. The other one i had, the one with the bad MD5, Nero wants to burn as a dvd. So whats wrong here, why is it showing up as a .iso for a cd, not a dvd? Is there any small, unovtrusive, easily removed burining rom that I can use to force it to burn as a dvd? Thanks for any help.

A .ISO file can be either a CD image of a DVD image.
The .ISO extension is used for both.
Read the following PC World articles. You just might educate yourself a little - or we can always hope you might gain some education!
http://www.pcworld.idg.com.au/index.php?id=1990681109
http://www.pcworld.idg.com.au/index.php/id;1066672400;fp;1024;fpid;3
drumz0rz wrote:

I had a bad copy of the beta, the MD5 didn't check out, and it was giving me the 8007241 error code, so I redownloaded it, took about an hour. I checked the MD5 and it was good. So then i tried to burn it, but heres the issue. Nero wants to burn it as a cd, not a dvd, even though the file is the correct 3.12Gb size. The other one i had, the one with the bad MD5, Nero wants to burn as a dvd. So whats wrong here, why is it showing up as a .iso for a cd, not a dvd? Is there any small, unovtrusive, easily removed burining rom that I can use to force it to burn as a dvd? Thanks for any help.