Use DBAN (www.dban.org)
The old version 1.0.x doesn’t always work but there is a newer version 2.2.6 beta available which works well (tried on Toshiba S200 so far).
If installing Server 2008 on a box that needs RAID drivers the process is vastly improved from 2003 which could only access a FDD. 2008/R2/Vista/7 can load drivers from various locations including pen drive. However 2003 drivers will not work, they must be 2008/Vista at minimum.