download Windows Automated Installation Kit(WAIK)
find and download the Windows server 2003 SP1/SP2 OPK(oem.microsoft.com)
install WAIK, find the imagex.exe tool under c:\program files\windows aik\tools\x86, copy it to a USB Flash drive
burn the windows 2003 OPK to disc, boot your system from the CD, plug in the UFD(USB Flash Drive), once the WinPE(OPK CD) boots and comes to a command line, browse to your UFD Drive, locate the imagex.exe use the following command
imagex.exe /capture /compress fast X:\ Y:\image.wim "Image Name Here" "Image Description Here"
where X is the drive letter that you want to make an image of and Y is the letter of the drive you have available to send the image to...I use my ipod or a file share on the network to send the images to...if you have windows server 2003 on your network, install SP2 and install WDS(Windows Deployment Services) set that up, and you can use WDS to deploy these WIMs to computers over the network...
note this only works with windows xp sp2, windows server 2003 SP1 and newer and windows vista.
Some people have told me this CAN also clone linux but i have not confirmed this.