This technical link provides examples of configuring nodes to adjust the IP Maximum Transmission Unit (MTU), TCP Maximum Segment Size (MSS), and IP Path MTU Discovery (PMTUD) on Solaris 8 (and previous versions), HP-UX 9.x, 10.x, 11.x, Windows 95/98/ME, Windows NT 3.1/3.51, Windows NT 4.0, and Windows 2000/XP.
http://www.cisco.com/warp/public/105/38.shtml