Parallels 8 - can't remove virtual machines from list

[speedyvespa]

I removed a couple of VMs from Parallels, however they still exist in the list of available VMs, and right-clicking them shows that the 'Remove' option is greyed out. How do I remove them completely?

 

[Parallels User]

Try left-clicking instead of right-clicking, you'll know what to do next.