for both OS image can be made up which has all the settings, but when considering Windows OS image won't be of no good as the partition scheme has been changed ... so for windows you have to do the installation of OS and all the application you required again ...
or you can try loading an image using VMWare or any other virtual OS running software
http://www.youtube.com/watch?v=QVl4OFB-v4g
and here is the few tutorial i looked in before doing this:
http://www.rodsbooks.com/gdisk/mbr2gpt.html
and to convert from MBR to GUID, do this in mac os x:
To partition disks other than your startup disk, from the Finder click Go, and select Utilities. In the Utilities folder, double-click Disk Utility. Once Disk Utility is open, do the following:
In the left column, click the drive you would like to initialize or partition.
To the right, click the Partition tab.
In the drop-down menu under "Partition Layout" or "Volume Scheme:", choose the number of partitions you want to create during the initializing process. For a basic installation of Mac OS X, you need at least one partition.
Adjust partition sizes by dragging the handles that represent the partition borders.
Click each partition to adjust its properties. Under "Partition Information" or "Volume Information", choose the format you would like to use. You should usually use Mac OS Extended (Journaled). If you need to access the partition from Windows computers, however, choose MS-DOS.
Click Options... to change the partition scheme. You may need to change this if the disk is meant to be used with Windows computers, or as a startup disk for a Mac with a different architecture. Intel Macs require the GUID Partition Table for their startup disks, while PowerPC Macs use Apple Partition Map. If you need to use the disk with Windows, particularly as a startup disk, choose Master Boot Record. After selecting a scheme, click OK.
When you're finished making changes, click Apply or Partition button.
