Currently Being ModeratedAug 7, 2012 11:32 PM (in response to cereskit)
Yes. Use the Disk Utility in the /Applications/Utilities/ folder to format it as Mac OS Extended (Journaled).
Currently Being ModeratedAug 8, 2012 5:57 AM (in response to cereskit)
AFTER you use Boot Camp Assistant to remove the Windows paritition you can create a 2nd partition by shrinking and creating a new volume.