How to free up space used by VM ware installations

Hi Virtualization Geeks,

I am new to using VM ware workstation.

I tried installing a couple of OS using VM ware.NOw i have removed those Virtual machines, but they are still using my Hard disk space ..

I see very less hard disk spac available to me...i installed 3 Operating systems, giving them 20,30,40 GB hard disk spaces...

Now even after removing those virtual machines, my Harddisk space isnt recovered.

PLease let me know how can i get my Hard disk space recovered...i want to get it recovered completely...

Kindly let me know the steps..Please