I do not own a board with such a controller so there are no demos 
included in the WinARM-package or available from the "WinARM-page" for 
this controller. The LPC2294 ist similar to the LPC2106, so you could 
start with code for an LPC2106, adjust the memory-sizes and 
start-addresses in the Linker-Skipt, maybe add initialisations for the 
memory-interface in the startup and verify if the initialistion-code for 
interrupt-controller and clocking is compatible and modify if needed.

You may also try the code in TestProjekt_00.zip from
http://arm.hsz-t.ch/wiki/bin/view/Main/NeuesProjekt (page-content in 
German)
I just found it through google, I have no further information on this.

You may also google for Ulrich Radig.He made a bootloader for LPC2294 
which boots ucLinux but the Bootloader itself is for "bare metal" and 
maybe you can reuse parts of the bootloader-code.