I HAVE A ISSUE I HAD VISTA AND MAC OS ON SPLIT HARDRIVE IN MAC OS I RAN OUT OF SPACE SO I DELETED SOMETHING THAT SAID UNASSIGN SPACE SO I DELETED THAT AND NOW IT ONLY DOOTS INTO WINDOWS BEFORE THE DEFAULT WAS MAX OS SO IM NOT SURE IF I WIPED THE MAX OS OR JUST THE BOOT MBR ... CAN SOME ONE HELP

hmmm can you post a little bit more information. Can you check Computer Management on Vista to see if it displays any other partition info & post it here:

Windows doesn't see Mac OSX partitions, so if you have deleted it, it may say Unused Space etc