[newbie] CDROM tray won't open when prompted to insert the Extension CD

[Mark Johnson]

I've tried on two different machines to install 7.1 and when it gets to the
part to insert the disk 2 Extension CD, the CDROM tray won't open up.  I
have to cancel out of that part of the install and continue with the normal
one.  Has anyone had this same problem?  Any suggestions...