according to Xccess at Daxii.com it doesnt matter for my 1TB drive using Windows Vista Home Premium What's the difference between MBR and GPT Partition Styles?
MBR is the standard partitioning scheme it supports a maximum partition size of 2TB,
GPT disks are new supports a partition size > 2TB and unlimited partitions, GPT disks are readable only by Windows Server 2003 SP1, Windows Vista (all versions), and Windows XP x64 Edition.
i would like to thank myself for taking this time to answer my own question. and Xcess too.