Allords,
It means you have to June 07 to convert them to Fully Paid shares. (the 30th june).
You send in a Cheque for 0.75c per share to convert to FPO
as in IE: 10,000 options converted would be $7,500 payable.
If you do not sell the option(s) by June 30th, you must convert them to FPO
you see? :)