Mocha X Server
Mocha X Server is a simple to use Windows X server software program that is running on a standard PC Windows platform, such as Windows XP. Mocha XServer lets you connect quickly and easily to X Window applications running on UNIX and Linux platforms. ... 8. ... Mocha X Server includes: Implementation of X11R6. ... The UNIX application run on the remote server, but the application output appears in a window on the PC, and looks as any other local Microsoft Windows program. ... This makes for an integrated world, where you can have mix of local and remote programs on the same desktop.
http://www.mochasoft.dk/mx11.exe - 5Mb - Download - Screenshot

AceaXe Plus Windows XServer
SSH X-Server for Windows, Secure way to run Linux and Unix on Windows Desktop. AceaXe Plus is the pre-eminent X Windows environment for the Windows 95, 98, 2000, NT and XP platforms. It enables easy access to different operating systems. It transparently connects different operating systems and... AceaXe Plus provides full support for multiple X applications, sophisticated window managers, including TWM, FVWM, Motif, Open Look and desktops like CDE, KDE etc. ... To get started, all you need is the AceaXe package and standard 64/32-bit networked PC and MS Windows.
http://www.labf.com/download/aceaxep.exe - 16Mb - Download - Screenshot