Help needed installing Mint in VB on OS X

[keithfdean]

I have VB installed on my Mac OS X 10.6.4 running WP - works fine (using VB V3.2.6.r63112)
I now want to install Mint 9. I have mounted the Mint disk (Linux Mint lsa) on my desktop. Shows as mounted in Disk Utility.
I set up new virtual machine in VB, but when I click start, I get FATAL : no bootable medial found.
Where am I going wrong?
Thanks

[dmcgraw]

You don't want to mount the Mint ISO in OSX, you want to mount it as a CD in VirtualBox.

[keithfdean]

Oh, I see.
How do I do that?
Thanks

[keithfdean]

OK, sorted. Mint is running
Time to sort out the guest additions
Thanks